The apartment is great. It's clean and has a wonderful view. There's conveniently a small elevator, so you don't have to carry your bags on the stairs (the elevator is close to the bedroom, so if you're a light sleeper you will hear the elevator if others in the building use it).
The location is fantastic. Short (3-10 min) walking distance to almost all cultural highlights, very close to the park (1 min) and in the midst of a lovely area with many restaurants and bars.
Carlos and Orinda are good hosts. They respond quickly, are flexible (we could drop off our bags before check-in time and leave them a bit longer after checking out), and arranged us a taxi to the airport.