My DH and I have stayed at this hotel the last 2 times we've been to DisneyWorld and wouldn't stay anywhere else off site. The only negatives I can say are the elevator is way slow so if you don't have luggage to tote around, definitely take the stairs. Their continental breakfast is good and gives you a good start to the day but remember to be there early or else you may not find a place to sit (there are tables and chairs outside by the pool if there isn't anything available inside). We used the shuttle our first trip but found the schedule wasn't that great. If you like the flexibility of going back to your hotel in the afternoon, I'd suggest renting a car and driving - it's only 10 minutes to the parks. The rooms have always been clean.
If you want to check out their website, it's comfortsuitesfl (dot) com