The apartment was in a great location, easily accessible to all the wonderful things that beautiful San Sebastian has to offer. It was clean and in a block with a lift, although it's only on the first floor, so we didn't use it.
It was on a bus route, which some may find useful for travelling further afield, but it meant it was noisy. We were blessed with fantastic weather, but we couldn't have the windows open at night because of the noise of the passing traffic. The rooms were too warm to sleep in without any ventilation and the one fan provided was noisy. Finally the apartment wasn't stocked with sufficient toilet paper which ran out on day two of our stay. The managers were very responsive, but only offered that I do a 30 minute round-trip walk to pick up more from their office. The next day the shower gel ran out and I didn't bother contacting them to ask for more. it would have also been nice to have some basic necessities in the kitchen like salt.
I think all of these things can be fixed with a couple of good fans and better stocking of the bathrooms and I hope future guests benefit from these changes.