We thoroughly enjoyed our stay. The location is a bit outside of the main downtown area but was easily reachable by bus. I think this was a good thing as the downtown area can get incredibly loud at night. The AirBnb itself was very clean and had a ton of extra amenities I wasn't expecting. I really enjoyed the fact that Pepi (the housekeeper) brought fresh fruit for us. The kitchen was also well stocked with tea and coffee.
I will definitely stay here again when I come back to San Sebastian.