Beñat is a warm and extremely helpful host who is committed to making your stay enjoyable. He picked us up when we arived, organised our outward transfer taxi and provided lots of helpful tourism information, especially about which bars and restaurants have a genuine local flavour.
The apartment is cosy and comfortable in an attractive tree-lined street abut 20 minutes walk from the Old Town and very close to the local bus if you prefer that. As others have noted, it is uphill on the way back, helping you to walk off the amazing San Sebastian food. The apartment bed is very comfortable !