Nice, clean apartment in a great location, about 20 minutes’ walk to the Old Town. We stayed 4 nights and it was very quiet up on the 9th floor, apart from some noise from neighbours late into the night on Friday.
The road that brings you to the building (a little roundabout where you can drop your bags off, etc.) is closed for construction. Googlemaps brings you to this road, so seeing the closed road made us a little confused and disoriented. It took us a little time to find the apartment as a result.
Parking was in a Mall an easy 5 min walk from the apartment. Several restaurants and bars around and a large supermarket in the mall made it easy to get food. The kitchen was pretty adequate, but you need to get your own basic kitchen staples like oil, salt, pepper, etc.
Overall a pretty comfortable stay. Would definitely consider staying here again if ever we return to San Sebastian.