We spent a couple of days at San Sebastian and Fermín's place was the perfect choice.
The apartment is very nice and has everything you need. It's situated a bit outside of the city centre but you can go there easily with the nearby bus which only takes a few minutes. In fact we preferred this, because the area is very quiet and the city centre gets very busy.
Most of all Fermín was a great host that helped us with everything and had a great attitude. Definitely recommended!