I read all the room reviews and after much thought booked the oceanfront king. We weren't disappointed. The temperature during our stay (November) was so perfect we slept with the sliders open. Imagine the sea breeze blowing in all night, the sound of the waves, and waking to the sunrise over the water. Even though we were right above the beach it was quiet -- and that's with a fishing tournament and a few weddings going on.
The food was wonderful.
We took the island cruise offered at the sea activities shack. Well worth it.
The property isn't really that big -- so I wouldn't plan a super long stay. We were there for 5 days and did lots of stuff off the property.
You can borrow bikes, although the ride along the major highway is kind of scary on the bridges.
The toilet water is heated (odd). So the seat is always wet if you leave the lid down (yuck). Leave the lid up and you'll be fine.
Smoking isn't forbidden like at lots of other places. If you are really bothered by smoke, just be aware that folks do smoke on the balconies, beaches and at the outside restaurants & bar. Not enough to be really bothersome -- but again if this is a big deal for you, you should keep it in mind.
Just remember that if you love long walks on the beach, the keys aren't really the place for you.
Seemed kid friendly, and all the kids were really well behaved. Although there were separate adult only areas we didn't really need them.
Wait staff was decent, but don't expect fast service. Hostesses were pretty much universally salty and not helpful. At least they aren't waiting on you!