Considering splitting our holiday in August between Captiva and The Keys. We have never got very far down through the Keys in the past and wondered is Key West a place where you could stay for a week (they have some nice villas for rent) or is it more suitable for a day or two visit?

Bearing in mind 4 kids with us 17, 13, 10, 6.

I read mixed reports - not particularly children friendly; too hot; no good unless you're into diving. On the other hand, if staying for a week, we would take a villa with a private pool so would spend the time between doing nothing at all at the pool and eating out in the evening, with occasional touristy trips in between.

Any thoughts from experienced Florida Keysians?