"We came as a family of 4 (2 adults + 2 children aged 8 and 3) at the start of October for a week and loved it!
We booked a double room with a gorgeous view of all of the pools. We had 2 double beds and pushed them together. The room wasn't very spacious but we didn't spend much time in there so it didn't really matter. We were all inclusive so were there for breakfast and tea most days. Breakfast was always lovely with plenty of choices including cereals for the kids. There was a different theme every tea time which was good for the adults but there wasn't much choice for if you have picky kids, which we did. The snack bar served chicken nuggets, chips, toasties, and hot dogs which my picky eaters lived off. There is a McDonalds up the road too.
We saw reviews about the pools being cold, which they are, but as soon as you're in there you warm up pretty quick. My 8 year old loved the slides and made a friend so was up and down each slide whilst we stayed in the water with our 3 year old. The lifeguards are definitely on ball with their jobs as my 8 year old jumped in the pool through an inflatable ring and kind of tipped upside down but I was there and got her but the lifeguard was nearly halfway to us in a flash.
The night time entertainment wasn't very good. There's a kids disco from 8 o'clock which our kids found boring so we went to the beach or shopping most nights. We did go to the park by the pool at the back one night but that seemed to be where the boisterous kids were left and weren't being very nice so we didn't go back.
The hotels literally a 2 minute walk from the beach with shops that sell beach stuff, snacks and memorabilia to your left when you come out of the hotel which is really handy. The marina is about a 30 minute walk away so we got a taxi there (if you ask at the hotels front desk they will call a taxi for you and it'll be outside within a few minutes) and then walk back to the hotel past all the restaurants and shops. The Sea Life Centre is at the marina but I wouldn't recommend it for the price we paid as it's pretty much like the ones we have in the UK which are also overpriced.
We also did Selwo Marina which has a little zoo and a part where you can get close to some penguins which the kids loved, Cable Carts, Bird of Prey Show which is at the top of the cable carts and has a little hiking trail with some stunning views, Mini Golf which is on the sea life centres roof, the little arcades in the hotel, a Dolphin Boat Trip where we saw 2 dolphins playing, the Ferris Wheel just past the marina which has an amazing view of Benalmadena, and the Bioparc which was hands down the best zoo we've ever been to.
All in all I'd definitely recommend for a family trip, we had a blast."