This app was mentioned in 2 comments, with an average of 3.00 upvotes
When in Rome...
Stay at the dorms an download this app
https://itunes.apple.com/jp/app/happihoteru-rabuhoteru-jian/id443900228?mt=8
https://play.google.com/store/apps/details?id=jp.happyhotel.android&hl=ja