You might want to ask this on the Orlando Attractions and Hotels boards as there are lots of offsite fans there.
Many over there recommend Wyndham Bonnet Creek. It is on Disney property but not owned by Disney. It is a Wyndham timeshare resort, but there are lots of sites to rent points from owners. I have heard nothing but good things about this resort. We are DVC owners but are actually staying here next year Easter week. We got a 2 bedroom deluxe through Vacation Strategy for about $150/night. THat is actually a high price for a 2 bedroom there...most people get them around $100. I thought it was a fantastic price though for such a peak weak and wanted to make sure I had a reservation now. The resort looks absolutely gorgeous though with tons of pools, lazy river, mini golf, etc and we can't wait to check it out.