We were warmly welcomed by Iker, he showed us our rooms, the house and he had a lot of nice tips of what to do in town and where to eat etc. He also gave us a map of thing to do in San Sebastian and the best way to get to certain places.
They are very flexible hosts, we arrived a little earlier, but that was no problem and if we had any more questions we could always contact them.
Location is perfect, everything was in walking distance: beach, sculptures, the old town and even the Gros neighborhood.
Would recommend 10/10!