This apartment is such a gem! We were two people staying working from the flat for a week and there was more than enough room for us. Both bedrooms are good size, the main one very big with big wardrobes and a desk. You can also use the table in the kitchen or the dining room.
The upstairs living room is so comfy for movie nights with a big tv and the terrace perfect place to enjoy the sun.
Belem itself is a really nice area with lots to see and places for food & drinks. Busses and tram to Lisbon city centre go from only a few mins away.