This is one fabulous apartment in a fabulous city -- additionally: it comes with a fabulous host.
The apartment is extremely nicely decorated and well equipped; its terrace faces south, it's in the middle of everything (that is: the old town, the Zurriola beach, the "new" town) and still (comparatively) quiet.
Gustavo had been more than welcoming, recommended restaurants and answered all questions we had.
Thank you, it was, well, fabulous.