The apartment was quiet and pleasant. The air conditioner in one room was broken (supply chain woes, I think), but the evenings cooled off quickly enough that it wasn't a major problem. The location was very good. It was in reasonable walking distance from many of the main sites without being too close, with a number of good restaurants nearby, and it was far away from the gaudy chintz near the train station. It was about 10 minutes walk from the water taxi, which is the first stop coming from the airport and the last stop leaving for the airport.
Also of note: it's on the fifth floor (US counting)/fourth floor (European). There's an elevator, but using it requires climbing about one floor (split in halves).
Host was responsive and helpful.