I love the Anaheim Hilton! When I was travelling for work, I reached Honors diamond level by my stays here. I'll be checking in again this Saturday. When I was there in March they were in the process of creating a new honors floor. Diamonds will still be on 14 if available (Executive level), the rooms are the same size, however the linens are nicer and the lounge is readily available. Many of the rooms on the 5th floor either have a patio to the pool or lanai areas, or some with a patio that overlooks the parks.
Request a park view room if available, the view is magnificient.
I am not a fan of the ART system, if you don't mind the walk, it is about a 15-20 minute leisurely walk to the park entrance, or you can walk to the parking lot across the street and catch the Disney tram.
Gold and Diamond Honors members get free access to the health club, with more than a hotel share of treadmills, eliptical machines, bikes, weights, spinning class, basketball court, lap pool, spa, etc....
No hotel is perfect, the downside is the parking ramp is owned by the city of Anaheim and they charge $12/day for parking, or $17/day for valet. If you don't have a car, not a problem, but the parking can get expensive if you are on a budget.
Enjoy your stay!
Diane