We stayed for 4 nights in Didi's apartment and had the most wonderful weekend in Lisbon. The location is brilliant for going out and having a good time - we particularly liked the jazz bar which is down the road, as well as a tiny but brilliant Portuguese restaurant.
The place is spacious and clean, and with just the two of us there we didn't get on top of each other at all. The centre of town is easily walkable in 10 minutes so this place would suit anyone who is looking for a buzzing and central location.