We had a lovely time in San Sebastián. Mikel's place is in a great part of town, walking distance from everything. The flat has been nicely renovated, and provided a great base for our stay. Mikel was extremely friendly and always happy to answer questions and make sure everything was alright. The only thing to note is that it's above a bar/club that play very loud music late into the night at the weekend. Not the end of the world, but did mean sleeping in earplugs as it went on past 4am...