Tha host charged us 1000€ for one of the keys getting lost. By the air bnb policy he s not entitled to do that and we are trying to get refunded through the air bnb administration. The argument of the host it that if someone finds the key they can get into the apartment and the whole lock system had to be changed and costs 1000€. After getting the lock changed he sent us a bill for 800€ which is still an outrageous amount of money for loosing one key. The apartment and part of city was fine. I would not recommend the host.