We (my husband, our 7 month old daughter and my parents) stayed at this great apartment and we had a lovely stay. The apartment is very clean, bright and spacious, just the second bathroom is a little on the small side (for Dutch people). Check in was very pleasant (we found beers in the fridge :)) and we received very quick responses to our questions both before as well as during our stay. A baby chair, bed and bath was arranged, which was perfect! A 20 min walk takes you to the old town and there are good supermarkets and bakeries just around the corner of the apartment. We would definitely stay here again if we return to San Sebastián!