We enjoyed our staying in Joao's apartment. It is very closed to all sights you could visit. It will take you 5 minutes to get the Praça da Figueira and then thePraça do Rossio. It is about 10 minutes- walk to the Elevator Santa Justa.
There is the big local supermarket close to apartment. The apartment is fully equipped with all you may need, the kitchen is perfect too.
The Mouraria is interesting, safety district. It is quietly at night. You can find several local restaurants close to apartment.
Joao is very helpful host. He has waited for us 3 hours in the day of arrival because our plane lated. And he call the taxi for us in the departure day and let us to departure from apartment in night.
I recommend this apartment. We liked Lisboa and we will take this apartment then we return!