<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019ff637-f2a7-7062-908b-4d55bc41ba9a,g:55c0d9a1-8ddc-44b2-8472-6d4c7c9fd8b8-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.earnreit.com/role/Cover" xlink:type="simple" xlink:href="earn-20260812.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.earnreit.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019ff637-f2a7-799a-bec8-8760736a49ea" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_DocumentType_019ff637-f2a7-799a-bec8-8760736a49ea" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019ff637-f2a7-747f-bbfc-35bbb9335446" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_DocumentPeriodEndDate_019ff637-f2a7-747f-bbfc-35bbb9335446" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019ff637-f2a7-71da-8618-40e3950f1b74" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityRegistrantName_019ff637-f2a7-71da-8618-40e3950f1b74" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019ff637-f2a7-7aba-80ab-17bc972ef7d1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019ff637-f2a7-7aba-80ab-17bc972ef7d1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019ff637-f2a7-7add-a7cb-1263e58eb360" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityFileNumber_019ff637-f2a7-7add-a7cb-1263e58eb360" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019ff637-f2a7-7a9e-b38f-dacbcd44762c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityTaxIdentificationNumber_019ff637-f2a7-7a9e-b38f-dacbcd44762c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019ff637-f2a7-7a60-8ed9-ce4790d11452" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityAddressAddressLine1_019ff637-f2a7-7a60-8ed9-ce4790d11452" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019ff637-f2a7-7cc5-ad01-284f204f2cda" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityAddressCityOrTown_019ff637-f2a7-7cc5-ad01-284f204f2cda" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019ff637-f2a7-787b-a3a6-3e9fced7679a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityAddressStateOrProvince_019ff637-f2a7-787b-a3a6-3e9fced7679a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019ff637-f2a7-7ff9-a175-8d6db7f9034a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityAddressPostalZipCode_019ff637-f2a7-7ff9-a175-8d6db7f9034a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019ff637-f2a7-7ae5-8dba-fdf857afcc94" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_CityAreaCode_019ff637-f2a7-7ae5-8dba-fdf857afcc94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019ff637-f2a7-702e-a74a-118610a3a4aa" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_LocalPhoneNumber_019ff637-f2a7-702e-a74a-118610a3a4aa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019ff637-f2a7-7e32-970b-4f3031659c0e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_WrittenCommunications_019ff637-f2a7-7e32-970b-4f3031659c0e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019ff637-f2a7-7347-ba5b-1adf63fb99c4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_SolicitingMaterial_019ff637-f2a7-7347-ba5b-1adf63fb99c4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019ff637-f2a7-7b2e-a235-0eff7f46a212" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_PreCommencementTenderOffer_019ff637-f2a7-7b2e-a235-0eff7f46a212" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019ff637-f2a7-7fed-a214-cf1f8df69889" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019ff637-f2a7-7fed-a214-cf1f8df69889" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019ff637-f2a7-7317-bd43-8f6614e735e7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_Security12bTitle_019ff637-f2a7-7317-bd43-8f6614e735e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019ff637-f2a7-71e4-baa7-cb974d9d618f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_TradingSymbol_019ff637-f2a7-71e4-baa7-cb974d9d618f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019ff637-f2a7-7c48-a5ad-14e5798c2e65" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_SecurityExchangeName_019ff637-f2a7-7c48-a5ad-14e5798c2e65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019ff637-f2a7-755e-9c4c-710cfece6f89" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityEmergingGrowthCompany_019ff637-f2a7-755e-9c4c-710cfece6f89" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019ff637-f2a7-7455-9bea-acf4f36ce5f8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_EntityCentralIndexKey_019ff637-f2a7-7455-9bea-acf4f36ce5f8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019ff637-f2a7-78fe-b87d-83c6e76b9f34" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_AmendmentFlag_019ff637-f2a7-78fe-b87d-83c6e76b9f34" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019ff637-f2a7-7f4b-9e82-02413d185fed" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ff637-f2a7-7a1c-bcab-0a5a63b5b326" xlink:to="loc_dei_DocumentInformationTable_019ff637-f2a7-7f4b-9e82-02413d185fed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_019ff637-f2a7-778c-b11f-37c3126d918d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019ff637-f2a7-7f4b-9e82-02413d185fed" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_019ff637-f2a7-778c-b11f-37c3126d918d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019ff637-f2a7-73be-888f-6bd02d2d2e5e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_019ff637-f2a7-778c-b11f-37c3126d918d" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019ff637-f2a7-73be-888f-6bd02d2d2e5e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorSubordinatedNotesMember_019ff637-f2a7-7afe-b721-b098c39ee6a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorSubordinatedNotesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019ff637-f2a7-73be-888f-6bd02d2d2e5e" xlink:to="loc_us-gaap_SeniorSubordinatedNotesMember_019ff637-f2a7-7afe-b721-b098c39ee6a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019ff637-f2a7-7def-8553-074667c084c2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019ff637-f2a7-7f4b-9e82-02413d185fed" xlink:to="loc_dei_DocumentInformationLineItems_019ff637-f2a7-7def-8553-074667c084c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019ff637-f2a7-721c-9537-b6e11d4c3da2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff637-f2a7-7def-8553-074667c084c2" xlink:to="loc_dei_Security12bTitle_019ff637-f2a7-721c-9537-b6e11d4c3da2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019ff637-f2a7-76b5-b477-551661ca4da7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff637-f2a7-7def-8553-074667c084c2" xlink:to="loc_dei_TradingSymbol_019ff637-f2a7-76b5-b477-551661ca4da7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019ff637-f2a7-7112-9dd3-069528a02695" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff637-f2a7-7def-8553-074667c084c2" xlink:to="loc_dei_SecurityExchangeName_019ff637-f2a7-7112-9dd3-069528a02695" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
