The big common house in no. 21 can be booked by sending an e-mail to obelbaren@gmail.com with the requested date, including starting and ending times, and your full name and apartment number. By default, a booking lasts for maximum 24 hours. The person responsible for renting will answer you if the rental has been accepted and if so, you are asked to fulfil and sign the lease contract.
Download:
Lease contract (English)
The calendar below shows when the common house is in use and is mostly up to date.