Given the prices in San Sebastian, Columba's place is pretty good value. It's located on a hill, walking distance from the beach. Shared bathroom was fine. The kitchen and fridge are not for the guests, but Columba kindly allowed us to keep some stuff in the fridge. There is no AC, but luckily, the heat wave had passed, so that was not really an issue.
Parking in San Sebastian was a challenge. We eventually managed to find free parking 5-10 min uphill. For checkin/checkout, it is possible to bring the car at the entrance of the parking to unload/load it, but we didn’t know before arriving. It’s a nice walk to the old town via the beach, and you certainly don’t want to drive there. THere’s also a bus to get to the old town if you're in a hurry.