I'm in DC from the UK at the end of March. I'd like to get a couple of weeks with wife and 6yr old somewhere warm and relaxing with a childrens club or similar.

Florida seems the obvious choice and I'm presuming that I can get packages from DC as we're flying back from there to the UK.

Is that a better bet than getting flights and hotels separately (Starwood Plat, HH Gold)?

Any suggestions as to hotels / places?