We had a great stay, the apartment is spacious, new, 10 minutes walk from the Guggenheim and 20 minutes from the casco viejo. Check-in was flawless and the hosts were nice and responsive. Everything was clean and the kitchen has everything you need. One thing to notice is that the apartment is located in a street with lots of bars, and, although the windows are sound-proof, you can still hear some noise at night.