We stayed for 6 nights and had a great time. The location is perfect, very easy to walk anyplace we wanted to go, and close to some excellent restaurants and fun souvenir shopping. The building was quiet. Two of the bedrooms have windows that open onto the street, but it wasn't super noisy at night, at least with windows closed. The third bedroom (the one with 2 twin beds) opens onto the building courtyard and was very quiet. The beds were comfortable, and we had AC and heat, although we didn't really need either one during our stay. Wifi worked great in the living room and bedrooms, not so well in the kitchen/dining area.
Both showers had slow drains but otherwise worked fine. We were only given one bath towel each for a week stay.
Most important: the front door key is very hard to open. We thought we might get locked out at first. The trick we discovered after 3 days is to pull the door towards you while turning the key. Makes it much easier!