The direct communication with Carla were excellent. She answered our questions very quickly and she arranged for extended check-out time.
However, it's a bit confusing and unsatisfactory that the mails from "Spainholidays4you" state different terms and requirements than those communicated on Airbnb (eg. different check-in/-out times and cleaning requirements).
Unfortunately, we found that the house lacks kitchen amenities of good quality. This is to be expected in a relatively expensive house.