No idea about watersports at the Sheraton, we just lazed around whilst we were there. Our room was fine, think it may have been a deluxe but not sure, although the bathroom felt dated. The wc and sink looked new but the sunken bath/shower looked like something from the 1970's! It was clean though. There were some rooms overlooking the lagoon which looked to have nicer bathrooms - we noticed as we could see straight in through the clear glass! So beware if you get one of those.
I don't know about the sea the rest of the year, but we went in the summer and it was a little rough some days. The beach was nice though, there was hardly anyone on it - maybe we just went at a quiet time.
Sorry didn't realise how 'great for kids' could come across. It wasn't full of rowdy kids, it was quite a peaceful resort, at least when we were there - but because the Sheraton had two elephants that visited the hotel twice a day, guests could feed them, the kids would have little rides on them. The afternoon visit was a walk on the beach where the elephants played in the sand and the sea. There was a kids club which we used on a couple of rainy days, which had a small outside play area, the helpers were friendly and did lots of different activities. The pool area was very big and spread out with 'canals' joining the larger pools. We didn't use the beach much, apart from the elephant walks, the sea could be rough and we preferred to stay around the pool anyway. Hope that clarifies what I meant!
We stayed at the Sheraton Grande Laguna a couple of years ago and thought it was great for kids. I don't think it was particularly expensive and we ate around the hotel several times, although we didn't have 4 children to feed!
