I'm renting a shared room (living room) with a super nice and fine sofa, easy access to the bathroom, kitchen and balcony. You can use everything in the apartment, washing machine, oven, tv, wifi, everything.. as we were roommates !!!
The building and apartment are super nice, new, modern, stylish... I'm a young guy living in berlin since Jan2017, starting a new ecommerce company..
Maybe it would be a great opportunity for you to visit berlin as a local, and it would be a way for me to save.