There is a Celebration hotel in the town of Celebration that I've heard nothing but good reports on, however I think you're talking about Celebration World resort which is a timeshare resort on Old Lake Wilson road. It's relatively new resort and in a good location. The facilities, from what I can see, are not as plush as other resorts in that genre, however they seem to be adiquate for spending an afternoon round the pool. Not sure I'd want to spend a whole day round the pool there as I'd be happy to at Vistana, Orange Lake, Wyndham Palms or Bonnet Creek for example.
I'm going to guess they will try to get you to buy into their resort, so beware of that going in if it's not something you want to do.
$221 for a week seems a great rate, was that a studio or a condo style unit with kitchen etc?