We have visited the Hyatt Cambridge at least once every year since it's been open. Have been there as a couple, with dog, and throughout the years with our kids of various ages. Always enjoy it! They have pool, game room, small mini-golf, kayak and jet ski rentals, tennis and golf among other things. My kids love the nightly movies at the pool and making s'mores at the outdoor fireplace
A few things to know:
1) Cambridge is a small town. There is not a lot to do off-property and you will need a car. For non-hotel restaurants, go to Easton (1/2 hour away). It is also not that far from the Maryland beaches.
2) Depending on the time of year, your experiences will vary. We've been there when conventions and weddings have taken over certain public areas, when the place has been sold-out for holidays, and empty in the off-season. Holiday weekends are chockfull of family activities. Winter is usually quiet but the kids love the game room (ping pong etc) and the indoor heated pool which has a waterlevel glass barrier that you can dive/duck to reach the outdoor pool. Call ahead if you want to know what you are in
We try to always eat at the restaurant by the resort's marina, which offers seafood and great views. It's casual and accessed by a shell paved path by the riverfront.