We stayed at Guillermo 's place with a group of 5 people during our stop at San Sebastian while travelling the Basque Countries on vacation.
The apartment is conveniently located very close to one of the beautiful beaches right next to the city, so that it is very easy to just stop by there even to relax on the seaside for just a moment. The old city centre with the many bars and restaurants is also easily reachable by walking a bit on the promenade by the sea.
Overall we had a pleasant stay and Guillermo was available to let us check in later in the evening on a short notice because we had to suddenly change our flight schedule due to unforeseen cancellations.