There won't be one central hotel for attendees sadly. It's a popular weekend so I advise you to book now to get somewhere decent. Read on.
The Tourist board have created an Oggcamp booking site for us. I would also advise looking at the other options below.
Check Late Rooms and Booking.com for the best deals.
ALL PRICES FOR TRAVEL TAVERNS BASED ON FAMILY ROOMS WHICH SLEEP 3
Also consider clubbing together and hiring apartments in the centre for larger groups, it can work out cheaper than a hotel. Plus you get a kitchen and lounge! Check apartments on Late Rooms website.
If you're having trouble or need advise you can email me - dan AT linuxoutlaws DOT com