Salvador's place is really well served by public transport. It's less than a 20 minute walk to Belem but you can also use one of Lisbon's old style trams that run between Belem and Lisbon city centre (Tram 15E) or other trams and busses. The apartment is located in a quiet area that is not a tourist area, but is safe, close to a supermarket (Pingo Doce) and has a couple of bars and cafes close by. It should be noted that the apartment doesn't have are conditioning. We stayed for 5 weeks (April to start of May) and although temperatures weren't really high (highest day time temp of 31), for a couple of nights it was quiet warm in the bedroom. The windows in the apartment can be opened to create a cross breeze which helps but during the hottest months I wonder would it be difficult to sleep without air conditioning. Salvador was really helpful (we were delayed arriving and he waited for us very patiently, he took our heaviest bags up the 3 flights of stairs, he was easily contactable and responsive). Note: you might only get 1 key (Salvador did say we could get a second key when were checking in but that it would be 1.5 weeks to get it) - we were able to work around this.