Salvador's place is really good value for money and the location was perfect. Perfect for exploring the pretty Alfama district, right next to the Cathedral, and surrounded by lots of good restaurants, bars and cafes. Also only a 10 minute walk from nightlife area, and a 8-12EUR taxi from the airport.
Apartment itself was spacious, tidy and the kitchen was very well equipped. Beds were comfortable and AC was incredibly useful. Only problems were a missing toilet seat, and I would recommend you bring your own towels as the ones provided were old and threadbare (albeit clean) - one towel had a huge hole in the middle of it.
I would recommend this place, and wouldn't hesitate to book again.