We had a great 4 night stay here. Check-in with Iciar was friendly and efficient and the apartment had everything we needed. It was unseasonably hot while we were there, but the fans provided kept the apartment comfortable.
There are several good little grocery stores and coffee spots within a couple of minutes of the apartment, and it is a flat, pretty walk to Old Town (about 20-25 minute walk). I think buses are probably easy, and they stop right near the apartment, but we didn't use them.
All in all, a lovely stay.