Our stay was just as expected, no surprises good or bad.
The flat was very conveniently located for us which was our number 1 priority when picking, so it served it's purpose brilliantly - we travelled from Lisbon for bureaucratic purposes.
The flat (along with rest of the building, I believe) is managed by a specialised company whose office is just down the street, which, by the way, has plenty of shops and restaurantes like the rest of the area. Also, it's just a short walk away from Casa da Música subway station. Again, very convenient.
The building is new and has a lift (not a given in Portugal) which came in handy as this flat is on the top (5th) floor. They were nice enough to leave us a bottle of wine which we unfortunately could't open as there was no wine opener in the room (although I'm sure they would have provided one if we had asked, we just didn't bother). I'd book again when in need to stay in this area.