I stayed in LeMeridien in the end of October early November. It is my favourite time in Egypt because it is neither too hot nor cold and sea temperature comfortable as well. This hotel treated as the best in Dahab, so in spite it isn't the best in Egypt it is good to stay when you here.
LeMeridien is quite far from Lighthouse - Dahab's "down town" so you'll need constantly travel by taxi but it is really cheap here so it isn't an issue at all, but a bit annoying.
The hotel isn't new, but preserved in good condition. It is worth mentioning that staff really tried their best to fix all issues I claimed and did it quick: faucet in a shower, balcony door locker, safe battery, etc, but to be honest it is better to simply check the room before my arrival :)
We had all inclusive package and it was really good when in the beginning we were eating by a-la cart restaurant (it was really littlle of guests so management decided it was better option to buffet menu). But if you have not all inclusive or full board package the prices in restaurants are expensive - I think twice more that in Lighthouse sea embankment restaurants.
Beach is cozy and when a little of guest here it is awesome. There is a sportclub, billiard pool, ping-pong and suana as entertainent. Diving center also was labeled but I haven't seen any life there, but it didn't affect me - I'm a technical diver and dived in specialised dive center outside.
There is a children playground but no signs of kids club.