On the positive: location is great near the beaches and metro (and thus city centre). Internet is fast. An effort has been made to give the apartment a modern look with the L shaped sofa and IKEA cabinets.
For us, there were some shortcomings (but don't let that scare you off, we still had a great holiday in Basque country).
Our main remarks:
The kitchen utensils weren't sufficiently cleaned
The carpet has a musky scent and the wooden flooring below the carpet is in bad shape (and thus quite noisy)
The private parking is shared with other inhabitants of the block, so a parking spot is not guaranteed.