The self check-in system requires a cellphone with data or you have to contact Laura before. Only problem is that you only learn of this requirement until a short time before your check in. The street door to the building was often left open. The apartment had experienced a robbery 2 weeks or so before. The security door at the apartment was awkward to close properly until it was explained by a neighbour. On the day before the departure we were denied entry by the system until our code was reinstated. I can only assume that someone had entered the wrong departure date in the system. On the good side, the location of the apartment very good and is quiet and Laura does respond quickly to emails.