Stayed 3 nights for a city break and it was perfect. It's in a great location in downtown Lisbon and just a minutes walk from the Metro and easy enough to walk to most places from there.
Reception area is very modern and has a relaxing atmosphere with free tea and coffee available at all hours. Excellent informative staff and free WiFi throughout.
I had the small room and it was plenty big enough, although I travel light and only had a small bag. The room was fantastic - lovely comfortable double bed (could be 2 singles), an iPad AND an iMac, nice decor and very clean. The room also has a small kitchenette which I thought was a bit needless but I guess some people may find it useful (hob, sink, fridge and kitchen utensils).
You could hear what was going on outside the room, but it didn't disrupt or awaken me in the night.
Another excellent choice thanks to TripAdvisor.More