We had a great time in Zarautz, but I have to say that it was despite the quality of this apartment.
There is a fair amount of space, but the apartment is quite dated and not well appointed, so feels significantly overpriced. The cleanliness was not good in places (although issues were well attended to by the hosts), but worst of all was the difficulty in sleeping. The apartment is well located as it is close to restaurants and the beach so maybe it is to be expected, but there is next to no sound-proofing and it was an awful place to sleep even though the beds were fine. The place could clearly do with some investment and I wonder if that could apply to some better windows/shutters to help with this problem. Perhaps there is nothing that can easily be done, but prospective renters should be aware how noisy it is even when there is nothing remarkable going on in the nearby streets.