Hi Oliwia!! Thanks for your comment, it always helps us to improve! The check in / out times are in the ad you used to book the accommodation. In addition, we send you 2 messages with the maximum time of departure. At 12 no guests could arrive, because check in is from 1 pm, that is why the room has to be available at 12 pm, because we have to do the cleaning service for the next guests. Whenever there is a check in, there is a team person in the establishment, since it is that person who receives the new guests and performs the cleaning service. On the walls, we perform maintenance after a short period of time, but there are many people who dirty the walls, as there are many people entering and leaving the apartments. Our intention will always be that guests are comfortable and have a nice place to arrive after a day visiting the city. We are so sorry if in your case it was not like that. Kind regards!