This is really a great place to stay in Lisbon. First of all the location is perfect. It is right on the border between the Baixa and Alfuma neigborhoods, close to the water and close to public transport. There is a great cafe right across from the front door and a pedestrian street of restaurants and cafes right there too. It really provides and ideal place to be to explore Lisbon.
The apartment was spotlessly clean, nicely decorated and well equipped. The bed is very comfortable and the air conditioning works well. There are French doors with small balconies that have a nice view of the nearby rooftops. The streets below are busy, but with all the windows and doors closed no noise gets through.
Communication with our host was excellent, and someone was there to meet us at the apartment and show us everything when we arrived.
The only thing to watch out for is that there are a lot of steep stairs to get up to the apartment. This wasn't a problem for us, but something to watch out for if you're not comfortable climbing stairs.
All in all I would highly recommend this apartment, and look forward to visiting again in the future.