/cgl/ - Cosplay & EGL

I've recently considered moving into the upstairs part of my house, or at least making a rec room/display room for my various collections and sewing stuff. It consists of a loft with a sunbed, table, dresser, queen bed and recliner (pictured) and an attic (you can see the door in the pic, it's full of shit). As you can see the place is a complete wreck, and this space isn't used for much other than storage, but I want to actually do something with it. My questions are, how should I decorate? I like a lot of the furniture but I want to turn the place into something eye-popping and not a granny-attic (once I move the shit out of here, of course). Do any of you live in a room where the bathroom is downstairs, and do you think living here full-time would be a bad idea due to that inconvenience? Do you have knicknacks and things that you adore, but simply make your room look cluttered/look out of place? How can I incorporate a nice color theme that will not clash with the woodwork? Sorry if this is a hefty load of questions!