The Flats are fantastic. Everything is modern and clean. The Flat was well-equipped and it had good WiFi. Isabel and the other staff were warm, welcoming, and did a lot to make our stay a success. Location was excellent: close to things a tourist would like to see and the neighborhood was pleasant. I booked a flat facing the square because I wanted the city experience. I will admit that there was a lot of traffic on the square, well into the night. However, the windows were thick and cancelled most of the sound. However, if you are a light sleeper, you might want to book a flat that doesn't face the street. Another caveat is that there are no elevators, so you will be carrying your luggage up at least two flights of stairs. This was not an issue for me, but if you can't carry your luggage, you might want to look elsewhere. If I return to Lisbon, my first choice will be to book again at Charm Flats.