Be aware that there are extra costs of EUR 30 per bed ! for bed clothes and towels. The apartment is fine (maybe except that it is located in the approach path for the San Sebastian airport), but the service was unhelpful.
I use AirBnB every second week. As usual we left the apartment clean and tidy, but Celine tried to scam us with a EUR 90 extra cleaning fee. I saw in other reviews that she tried it before with foreigners.