We had a fantastic 5 nights at this place. I was hesitating, but I am glad we did not book an apartment in the city of San Sebastian. Kayros' place is close enough to the city, but it is so peaceful and quiet. Everything we needed.
The house is spacious and very, very clean.
The owners are the nicest people. They live right above the apartment and they are very friendly and helpful. But only around when you need them, so you get all privacy you need.
Don't hesitate, just book!