Not much available near the casinos. We always stayed in casinos and they were quiet for sleeping. Don’t think that the casinos noise will bother your children, I've stayed in several casino hotels on the coast and noise has never been a problem. Almost all of them have pools and movie theatre. And they are away from gaming area. I have seen many casino hotels to be many people with children.
Apart from this I can suggest the Best Western Oak Manor which is my favorite beach motel. It is situated directly the street from the famous Beau Rivage Casino Resort and very very close to the fabulous
Biloxi casinos. If I don’t get accommodation in casinos then I usually choose this motel and it offers a great continental breakfast. It was convenient to the casinos and I felt very relaxed atmosphere. Also you can find nearby golf courses and a wide range of water sports including sailing, jet skiing and fishing. This motel is located in 886 Beach Boulevard, and the phone number is 228-435-4331. Being at Western Oak Manor, you will probably never feel like going back home again……