Not sure if I'm allowed to say or not but look up Last Minute Villa rentals. Wow I went there and cannot believe the offers I got on vacation homes from 3 to 5 bedrooms close to Disney.
PS: The one we stayed in in the past when we went down with family was Windsor Palms, just 5 minutes from Disney, WOW your own pool and they have a community pool, clubhouse and movie theater. Wonderful place.
If you are looking for a condo, I would highly recommend Cypress Point or Cypress Point Grand Villas. You can get a 3 bedroom condo through hotelkingdom very cheap. There are great pools and play areas for the kids. They are right by DTD.
For your group of 10 people you will need at the least a 4 bedroom home but travelling with 3 couples I would look at 5 bedroom homes with private pools.The 4 bedrooms often have two masters and two twins.In the 5 bedroom you normally get 3 queens or kings and then 2 twin rooms.
I'm assuming you are looking for a pool home rental??? This would be a great option for you. As Spiceycat mentioned I'd check www.vrbo.com or others like www.orlandovillas.com and/or www.onlinefloridavillas.com . They are rent direct sites- but it tends to find you your best deals.