Hi
There are 4 or 5 SMALL man made beaches, within small man made coves.
Despite their size we did not find them to be excessively crowded as there are so many other places to hang out in the complex - we were there at Oct half term - that said the hotel was obviously not operating at capacity then.
There is not a great deal of sand on any of them (and a couple are just rocks/concrete), but my kids still made use of their buckets and spades !
As stated, the beaches are within the man made coves, and whilst not making them partucularly picturesque, it does make them safe to bathe and/or have inflatables. The middle cove has a lifeguard post - though we never saw a lifeguard when we went, I presume that they must have one during their busier periods perhaps ? You can also use inflatables in the pools. There is a small dedicated splash pool outside the kids club which is nice if you have none swimming little un's.... but I noticed that there was no shade on it (perhaps you could have a word with the staff about this though?)
Right next to the hotel, on the Rethymnon side...and with a pretty pathway going to it from the hotel, is a much larger public beach which is sand-shingle. There was no one on it when we went in Oct but there was the reminants of a cafe/shop which lead us to believe it may be operational in the Spring/ Summer . There was a rather slimey green river near this beach inhabited by ducks - it didn't look too nice but didn't smell or interfer with the beach too much.
There is a nice little beach at nearby Panormo which has a bit more sand on it , but again a little on the small side - there is a frequent noddy train down to it from the hotel - just a short ride.
There is a big sandy beach across the bay at Rethymnon itself and a regular bus service from right outside the hotel complex.
We did ask for an upgrade for our room (as you may have read in my report) but really there wasn't anything wrong with our garden view room - we had just been spoilt by previous holidays and had become acustomed to a sea view. I must say the sea view bungalow we had was very very nice - though there isn't a great deal of room for sitting out as the terraces are quite small.
This is a great hotel - I'm sure you will enjoy it - its the first place I have ever felt I 'd quite like to go back to (normally I'd always pick somewhere new and different every time).