The apartment is just like described. Very centrally located and sparkling clean. The building is in excellent shape and the apartment is modern. It has a small elevator which is a plus considering that in Spain elevators are rare. The host is very attentive and responds very quickly to any questions or request, he waited for us to arrive and showed us around the apartment and gave us tips of where to go and places to eat.
Tips: I would recommend taking the double decker bus, it takes you around to the must sees of San Sebastián for just 12 euros. one of the stops is about 3 block from the apartment which is very convenient.
Reminder: Always remove the key from the back of the door before leaving the apartment if not you won’t be able to open the door from the outside when you get back.