I've never experienced a "bad" Double Tree so I'm not surprised that this location was just as nice as others I have visited.
This location is perfect if you're staying in the Gilbert/Mesa area. It's about 40 minutes from the airport which isn't terrible considering how large the Phoenix-area is. There is an impressive fitness room, a small pool that is perfect for a hot day, a spa (didn't get to check that out), and a solid restaurant with an $11 breakfast buffet every day! Their room service is also pretty good and not at all expensive. There is also a pantry downstairs (just like all Hilton locations have) with a vending machine (takes plastic) as well as snacks and other items you may need during your stay. The staff is very friendly and helpful.
The rooms are HUGE and have massive ceilings. The only issue is while the room itself is large, the bathroom is small and narrow. The bathroom door opens right into the toilet. Water pressure and temperature is perfect. The rooms (especially the bathroom) are much too dark but you'll make due. There is also a tv with a lot of cable channels but who makes use of that?
Overall, this is a great Double Tree location.