Wyndham Bonnet Creek timeshare condos are surrounded by Disney property and offer 2, 3 and 4 bedroom units. Max occupancy for a 2 BR is 6, so that will be too small, but either of the others will fit your needs. WBC has mostly 2 BR units, so if you want 3 BR, you need to book early. We always stay at WBC (we're Wyndham owners), and it's a great place to stay.
I book ours directly through Wyndham, but if you check this forum, you will find recommendations for places that rent the WBC units.
I have no experience with other resorts, but I know there are a lot of condos for rent in the area if you look around this forum.