Our stay with Kristina & Iker was wonderful. Highly recommend this spot!
Kristina & Iker were incredibly transparent and communicative from booking to check-in. They were also very hospitable and easy to talk to -- we had a lot of conversations with them about our families, travel plans, and more (they speak English fluently which made communication even easier!). Additionally, they had amazing suggestions of what to do during our time in San Sebastian and even had descriptions/maps printed out for us upon our arrival! We didn't have any plans when we got there and relied upon their suggestions during our stay. Super happy that we did. We had a great experience.
The location is also spectacular. It's a bit farther away from the Old Town (~20 min walk uphill), but it sits on a hill so our bedroom afforded us a great view. We actually liked being away from the craziness and noise of the Old Town as it meant that our evenings were very quiet.
A few things to keep in mind when booking this spot: 1) Kristina & Iker rent out 3 rooms so there will likely be other guests. There are two bathrooms with showers so it was easy enough to get to the bathroom when needed, but it's still something to note if this is not your cup of tea. 2) Kristina & Iker have a small child (she's adorable and fairly quiet) and two dogs (also quiet; didn't bark once while we were there). We didn't mind this at all -- in fact, we found their daughter and dogs endearing, but this is something to note before booking.
In summary, the location was great and Kristina & Iker were lovely hosts. Would highly recommend this spot to anyone traveling to San Sebastian!