Hochzeit in Lörrach

Sehr geehrte Damen und Herren, I wish to enquire about the possibility of hiring a venue for an apero on the 29th June 2012.
We would be inviting approx.. 50 people and would need the hire of the room for the whole day - 10am-10pm
I would greatly appreciate it if you could let me know if this is possible and what costs would be expected.
Kind Regards