Spoke to my boss earlier.He's just bought a M3 and is organising another works ring trip.Thats happening in February but reckon fitting 2 in would be awesome so count me in.
Can I ask why dont you stop at the am tiergarten..
http://www.am-tiergarten.de/Its fairly priced,half mile from the entrance and your room overlooks one of the fastest bits of the ring.its owned by Sabines family and if your lucky like I was you get to share a balcony with her...well she was on the next table anyways.
We booked it for 12 rooms 3 weeks before we left last April,no problem with availablity...
car park.