You can rent Schloss Oberstein in whole or in part. It is worthwhile for you to become a member of the OCC, because members and supporters pay lower rents for the rooms of the castle. However, individual services such as firewood or candles are independent of the status of the renter.
The current price list for Schloss Oberstein can be found following this link. There you will also find the associated contact details.
If you want to request a rental online, you can do so here.
Please note: during rentals, Schloss Oberstein is not open to the public.