We stayed for 4 nights between X-mas and New Years Eve in here.
Nikolina (co-host) is your contact there and she is nothing short of perfect. We had a delayed flight and she waited into the late evening, greeting us with a smile, explaining everything and even put some traditional pastries on the table for us! :)
The flat is just as decribed. Very clean, a bit bigger than it appears on the pictures and you can easily reach everything in the inner-town by foot or find public-transportation just right in front of the door. Speaking about right in front of the door... there are a lot of restaurants, the Time-Out Market just around the corner. You can eat from breakfast, lunch to dinner and have a cocktail in the small park besides the building.
You can easily reach Bairro Alto for nightlife and dinner with the "Ascensor da Bica", a tram that functions as an elevator. Maybe it's closed when you come back from dinner, but just walk down that same track. Downwards it's an easy and very short walk.
..
.
we liked Alfama better, which is on the other side of the inner-town, but it looks further away on the map, than it really is. We ate there one night in a small restaurant with live-music and even the restaurant was on the far end of the Alfama area it only took us about 30 minutes to get there by foot. (we actually wanted to walk thrpough the city)
If you wanna go somewhere fast us a regular taxi and ask for the rough pricing in beforehand. The TukTuks are everywhere, but they are just for fun. Use them once, but prepare for triple the price.
Don't miss the LX-Factory when you are there. If you happen to be there on a sunday, they have a flea-market, which is buzzing the place even more and really nice!
(6€ with a normal taxi from the flat)