Thank you very much for clarifying the situation.
So in this case i will run a separated instance for each room on a different port and then i will run a http server which will get the request from the browser and redirect to the convenient mm2 server by adding redirection conditions in the .htaccess file.
The bowser will get the request let’s suppose on localhost and the result should be like the following:
hall: redirecting from http://localhost/hall => http://localhost:8080
bath: redirecting from http://localhost/bath => http://localhost:8081
room1: redirecting from http://localhost/room1 => http://localhost:8082
room2: redirecting from http://localhost/room2 => http://localhost:8083
The whole situation is clear now, thank you for your help