This is a very nice, confortable and well located apartment close (walking 15 min distance) to down town San Sebastian. It has one parking assigned in a different building around 1 block distance which was OK for us. Several supermarkets, fruit stores, restaurants, bars, etc around. 3bed 1bad for groups of 5-6 peolple is OK, we were only 3 and was super. In summary, very recommended place to stay. The owners very present and pending about the things doing well. Super place.
Note: about money exchange in Pais Vasco (this Spain zone). They don’t change money for you in the banks and there are 2 or 3 places to change in all Donostia-San Sebastian with very limited time attention. So it’s going to be very tortous for you to get € from US Dollars for example (which is ridicolous in 2019)