The location is absolutely fantastic, the view A+, the studio is quiet, we slept well.
At few steps you have everything: lots of restaurants, supermakes, the pedestrian area.
The building has an elevator, there is a private parking at few meters - parking Restauradores (around 25 Euro/24 hours).
It is not suited for 3 persons (it has an extensible sofa), we are a couple and is was just fine.
PS: Lisbon is an incredible city, beautiful. Don't forget ot get a trip on the tram 28.