Our family stayed over Christmas week in a 2 bedroom unit in building 105. I found the condo to be better than some reviews I'd read. The resort is in a good location, is on very nice, well-maintained property, and is full of things to do. Close to shopping (the proximity of the Publix store is excellent), reasonably close to Disney, easy to navigate to/from.
The only thing I would say is that the shuttle bus to/from Disney could run a little more frequently. We were lucky enough to get on the bus the one and only time we took it, but many were left standing at the curb, SOL. Also, in this day and age, charging for internet is a bit much.
The condo was not as aged as I'd read about in the reviews, although, for a little bit more money, when building they should have invested in higher quality cupboards and granite counter tops. This is more a general comment, not a complaint as it made no difference other than from an aesthetics standpoint. Blackout curtains in the master bedroom would have been good, as the lights from the exterior walkways shone through the blinds at night. Numerous items were missing from the kitchen but when I called needing a salad bowl, I received one very quickly. Basics such as tea towels and laundry soap and dishwasher soap were a bit light, they could be more generous like other resorts in providing a reasonable amount for someone staying a week.
Staff at the Big Kahuna bar were very nice. The daily phone call from the timeshare office was not appreciated, considering we'd requested "do not call" upon check in, but the persistent fellow was very polite.
Beach is nice to relax on but I'm not sure I'd actually swim in that lake. It looks a bit stale.
Pools were great, kids water park great, gas BBQ's greatly appreciated (and not available at other resorts nearby, such as Orange Lake).
Overall, we liked it and would return to this resort.

we stayed at Summer Bay Resort at Christmas week every thing was good except the internet connection not working at the unit even slow at the clubhouse, free shuttle to the supermarket was
a good help but the one to the parks was not good and times was limited, the resort is very far from all attraction about 40$ for a taxi and when we take the free shuttle to the parks it goes to 2-3 other resorts before taking you to the parks same for the return so you lose about 3 hours daily at the shuttle and it's not comfortable then when they take you to the first park they asked you to use the disney shuttle or monorail to continue and that was very full because of christmas. so dont go unless you have your own car orgo to other resorts which close to the parks with the same price

Stayed at Summer Bay week of 12/15- 12/22 in a two bedroom condo in building 208. No complaints at all. Unit was clean, spacious and comfortable and appeared to be recently updated with new flat screen TV's. Grounds were nicely kept and staff were helpful and friendly. Didn't have any children along so can't speak to the activities for kids.

Convienently located about 15 minutes from Disney parks with no traffic problems. Lots of restaurants in the area from family dining to a few nicer places.

Overall would definitely stay here again

Stayed for a week to go to disney and it was great. The 2 bedroom villa with 2 bathrooms was very spacious and affordable. It also had a full kitchen which was very useful during breakfast. Their internet connectivity was not very good and their sysyem for internet use at the business center is horrible. Besides that, we were very satisfied.