The flat was perfectly clean and well equipped for life on the beach - a parasol, fridge bag with ice packs, food containers. Aircon was a blessing as the flat gets really hot during the day and it becomes impossible to sleep at night without it. All the appliances and the shower work fine, so we didn't need to get in touch with David, the person who welcomed us for the check-in, until our check-out was due - David was very friendly and helpful with tips about the fiesta and restaurants, top guy!
The only negative note, which is not the hosts' fault, were the teenagers renting the nearby flats who would go on partying loud until the early morning hours for the Sant Juan Fiesta - nothing that a call to the local police won't sort, but be aware of it, if you plan to stay around Ciutadella and seek tranquillity, on this time of the year.
Overall a very good stay - as a general comment, I recommend renting a car to visit the best and more secluded beaches.