TLDR: An Electronic Travel Authorisation (ETA) allows UK visits up to 6 months but is not valid proof of Right to Rent.
Proof of Right to Rent
An Electronic Travel Authorisation (ETA) lets you travel to the UK for tourism, visiting family or certain other reasons for up to 6 months.
As they do not confirm immigration status or lawful residency, we are unable to accept ETAs as valid Right to Rent documents.