My family has stayed there a couple times. The hotel rooms are very family friendly and my kids loved having their own room, TV and bunk beds. We didn't eat at the restaurants because they were outragously expensive as the Hyatt hosts lots of conventions. There's a Starbucks in the lobby tho. The bus service is very handy and timely. They use the greyhound type buses with service on the half hour. The only draw back is the bus stop at
Disneyland is quite far from the main entrance - almost to Harbor.
I would be happy to answer any specific questions you might have. Have a great visit!