It's a little underground stage, fitting perfectly for people who are into alternative music, such as rock, punk, metal and their many-many subgenres.
There's also a teleport leading to the backstage (and another one there, leading to the squat*).

* squat - a building unlawfully (illegally) occupied by people living in it (usually anarchists).

https://www.habbo.com/room/68783138

!! It looks and feels real cozy, seems like a great place to hang out (:

Thank you, kei! <3

oOoh grungey!
Feels like the first image could use a grunge lamp in there somewhere to make it look less empty!

Update: The stage has been moved, backstage and squat still in their right places.
Currently building a chill room for my Deadpool group: https://www.habbo.com/room/68979889
Will contain a retro-ish Diner, a garage band stage, a crime scene, a stoner's shed, etc.
(Suitable for chill & chat, also roleplay).

So cute!! I wish I could add as much detail to builds as you did in this!