Mondrian was fantastic. Beautiful, comfortable, great value. The host responded very quickly to all questions. The location is ideal. Great neighborhood. Sleepy and quiet during the week, and opens up a little during the weekend but nothing very late. I couldn't imagine a more ideal apartment or location. The beds and bedding were better than any hotel I've stayed at. This city is amazing. Enjoy your time here. I can't say enough good things about Donostia-San Sebastian and Mondrian.