Katie's place is fantastic. Her and her two friends (especially Fernando) were super helpful in helping us settle in. The place is bright, airy and has lots of books (excluding a guidebook to San Sebastian).
The place is still new so is lacking in some features: a kitchen, wifi reaching into the rooms (it's available in the common room), more trash cans, etc. but these will improve over time.
I think it was a great place to stay and I would stay here again!