Good, spacious apartment in a great location - 5 mins walk to the beach and 10/15 mins walk to the old town.
Beds were nice and comfortable and the bathrooms were clean. However, bring your own shower gel and shampoo as this wasn't supplied in the apartment.
Kitchen is kitted out well and there are a couple of little supermarkets close by to buy supplies.
Great communication from Masa who was a very accommodating host.
Would happily recommend for a trip to San Sebastian.