Rented apartment is housebreaked with key!
There are rings, necklaces, bracelets and sunglasses missing at apartment. The value of these missing items are around 2000 EUR. Apartment door was not forced, also balcony doors were not forced and closed. The only remaining possible entry option to the apartment is using the "key". I think this is a serious security issue and the host should take the responsibility and compensate my loss.