Rodrigo & Eva's place was absolutely perfect for my husband and I during our 10 day stay in San Sebastián. The flat was impeccably clean - maybe the cleanest Airbnb I have ever seen! Eva met us upon arrival to show us how to access the parking garage, etc, and she couldn't have been more welcoming. The flat was well stocked, with plenty of bedding and towels, all the basic essentials for cooking meals (not just pots, pans, dishes and serving ware but also sugar, olive oil, vinegars, condiments, etc. And Eva was kind enough to get us some pastries, cream for our coffee, and a bottle of Txakoli as a welcome gift! We actually toasted our great choice of Airbnbs with that bottle!
By the way, if you're looking a rental car and not sure about whether or not you should book a place with parking included, the answer is yes. Streets are tiny in town, parking is limited, and it's tough to drag suitcases for blocks. Having the parking space included was a lifesaver for us.
The location of the flat is also perfect - you can actually see the beach from the front steps of the building. It's a very easy walking distance to Old Town, and all of the sites you might want to see in town, including Monte Igueldo & Monte Urgull. There are little markets within a stone's throw of the flat, as well as a Lidle grocery around the corner for bigger purchases if you're staying a bit longer like us. The washer/dryer combo was also a lifesaver for us since we were staying longer than a week.
This is the one - look no further. If it's available during your visit dates, book it quick before someone else snaps it up!