We stayed for 4 nights and couldn't have been happier. The place was charming, clean, and in a great location. We never had to worry about keys as everything was handled with codes. And we were close to the water, transportation, and entertainment.
The flat, itself, was small, but fit our needs perfectly. It was on the first floor so only a few stairs to climb. The bed was comfortable and we ate breakfast each morning at our table. Even though the street is a main artery into the square, it was very quiet and we slept comfortably each night we were there.
When you walked outside, everything was at your fingertips. We found the types of places the we enjoy when traveling and it was easy to get to either by foot, metro, or taxi. There is no need for a car.
It was a pleasure to stay here and we hope to again upon our return to Lisbon!