Many thanks Jean and Molly for your replies.
We have read quite a few reviews on the hotel and it seems to be fine. As long as the boys are in the pool during the day and can be kept amused in between then we're happy with that.
Thanks Jean for the info about the supermarket/waterpark, we've managed to steer the boys away from waterparks in the past because they've been too young but it was a bribe that if they learnt to swim this year they could go to one - which they have so we can't use that excuse any more!!!
We're very much looking forward to coming over, we've been reading the forum since we booked and it seems such a lovely, friendly place - only 11 more sleeps and counting.
Thanks again