This is a great option in what is a Usually a very expensive city.
The apartment is spacious, well - equipped and ideally located for almost anything you’d care to do in San Sebastián.
It can get a bit noisy if you occupy the room which overlooks the street but it’s manageable.
However, if you’re going for work, as we were, be warned that the WiFi is shockingly slow so best get a 4G connection to share.
All in all, definitely recommendable.