Celia is extremely responsive to all forms of communication, and we were fortunate that she was able to pick us up at the airport. (very nice when arriving to a new city)
There is everything you could need within easy walking distance, and as others have said, the Metro (subway) is almost at your front door. I consider myself a light sleeper, and I had no issues with noise from planes or the metro - the windows block the sound well. Cute space, plenty of storage and a full size kitchen/fridge. There are many pros to staying here, the only downside is the tub drains a little slowly, not a deal breaker. We enjoyed our time in Lisbon and Celia's place.