My boyfriend and I had a wonderful 2 week stay in Albert's apartment this July. They both convey a sense of old-world hospitality that feels more akin to staying with a favorite relative rather than an AirB&B set up. Apartment was super clean, spacious, and well appointed and had all the luxuries of home. Auri came to the train station to greet and walk with us back to the apartment, an easy 15 minute walk. The neighborhood is quiet and we were able to sleep with the windows open every night and there are a fair amount of restaurants/shops/stores in the area that we didn't feel we had to venture to the old port every night to get a good meal.
We can recommend a tasty, basque restaurant just around the corner for a 12 euro menu del of the day, Bar Bigarren- tasty food, local atmosphere, and great prices. And recommend going for Pinxo Pote (1 pinxo+1 wine or beer for 2 euro) that happens in the area every Wednesday night- Bar Esparru on Karlos la Haribidea has the best Hongo(wild mushroom) croquette I've ever had.
Our hosts went above and beyond to make our stay comfortable. I have recommended Albert and Auri's place to my older parents and my friends and, when I return to San Sebastián, hope to stay here again.