The hotel is very well located, and on top of that it's beautiful and very comfortable, and built with attention to detail. My room was big, extremely well equipped, had a comfortable bed, and a big and very clean bathroom.
The staff was generally very nice and helpful, and breakfast was nothing short of superb.
I would most definitely come back to this hotel and recommend it to anyone looking to spend a few years in San Sebastian.
In terms of parking, it's expensive, but it works well. If you are willing to walk a few blocks there other options available, albeit less convenient.
Summarizing, it is an amazing hotel that deserves an absolute 10/10.