It's my first time in San Sebastian and I'm going to be celebrating my 40th birthday there. I'd like to visit somewhere special. I do have a fancy for the whimsical and fanciful, care about nice and comfortable ambiance (professional but not stuffy), but flavor is far and away what I care about most.
I've been looking at Arzak, Akellare, Extebarri, and Martín Berasategui. Where would you go? Or is there somewhere else?
(I've been reading some similar posts on Chowhound, but they're from 4-5 years ago and I feel like a restaurant can change dramatically in that amount of time)