My boyfriend and I spent 3 days in Perdro and Sergio's apartment. It is beautiful and clean with everything you might need(or might have forgotten). Perdro met us after our flight was delayed with no problems, and even spent some time answering some questions and showing us on a map what might be nice to see.
The dishwasher and washing machine was very convenient. We would definitely stay there again if ever in Lisbon.
Just a note: if you are planning to go to the beach bring some beach towels along. Other than that the apartment has everything you need.