Looking for a zwischenmieter for single room in 4er studentenwohnheim WG

Our WG is a recently updated student wohnheim WG with 4 bedrooms and we are pretty confident that we have the best WG in the building. We have a large kitchen which doubles as our common area with sofa and TV etc. We are on the 4th floor, but if some days you feel like you "just can't even" anymore then you can use the lift. I've timed it and taking the stairs is normally quicker, especially when going downstairs ;). My bedroom comes with a nice-sized wardrobe/cupboard and large shelving unit (regal). I also have a big, comfy couch and a small tree in the corner which will need a big gulp of water every now and then. We have a new WIFI setup here which is working really well and there are washing machines and dryers downstairs but you require a student mensa card to use them and each wash costs 1.50. If this is a problem maybe you can ask one of the flatmates to use their cards. My flatmates are Ilka, Janika and Alex (2 girls, 1 guy. All German but are happy to have an english speaker too) and are extremely friendly and open minded, lovely people. We are all uni students and are between 20 and 27 years old, getting along really well. My flatmates would love for someone who is up for hanging out every now and then in the kitchen, spontaneous dance-offs, sharing funny stories and generally easy-going and open minded.