Nice, but could do better so easily!
First the good- We paid the $9 upgrade to a 700sf suite and it was huge. Two separate rooms with a living room area and half bath. Large shower/tub. Comfortable king bed. Great view. Check in and out was easy. Nice enough employees. Nice big pool area on the 9th floor. Room rate was about $125 with tax and $9 self parking included.( Valet was $19.95)
Not so good was the fact that you MUST swipe a room key to use the elevator, enter the pool area, enter OR EXIT the parking garage. This was a pain in the rear, to be honest. Is this neighborhood this bad? 
Room service ends too early at 11:00 on weekends. We had to leave and drive around to find a place to eat on a Saturday night after a concert at Reliant. Not much nearby at 11:15 PM in the medical center area. Room service would have been awesome since we were tired.
When we checked in, in the room fridge was a box of old KFC chicken from the previous guest. Yuck. I just set it out in the hallway. 
There is no executive lounge like other Hiltons.
All in all, even with the problems, I would stay at this property again because the rate was great for such a large room/suite. And the proximity to Reliant is nice.