Great apartment with big clean rooms and nice balcony and nicely decorated: check
Great host that communicates well and accommodates the unforeseen: check
Great neighbourhood, with good transport and nice things around: check
This was well above average. Katie just put up with my late arrival, and helped me with things that were not part of the deal and she is just all around a nice person to deal with.
I'd definitely would come back here whenever I have to come to Donosti