Recently I attended a conference in Houston at the George R Brown Convention Center. I lived in Houston from 2009-2012 and go back about once a year. It amazes me how each time I go back, something has changed about Houston. I decided to split my stay between these two large convention center hotels. The way the convention rates worked, I actually checked into the Marriott, then the Hilton, then the Marriott again. Here is a quick comparison between the two mostly in pictures.
The hotels themselves are both connected to the convention center and are on each side of the Discovery Green. Hilton is right next to the Toyota Center, and the Marriott is right next to Minute Maid Park.




Both hotels are very nice large check-in areas and common areas.






The room at both hotels are nice. These are large hotels so the room are pretty standard Hilton and Marriott rooms. So not much to write about there.
Next is the highlight of the hotels. The pools and recreation area. Hilton has a Spa Like pool, where Marriott has the amazing Texas shaped Lazy River pool.





Now lets talk about the Elite lounge areas. Both of the lounges were some of the better US lounges I have seen. Breakfast was good, snacks though out the day, and then appateizers that could double for dinner. Both lounges had bar areas- Hilton a real Bar and Marriott a makeshift bar.



















Overall
I would love to stay at both of these places again. If I was coming for work I would probably stay at the Hilton. The lounge was just slightly nicer and it was a lil quieter there. If I was coming with my family, hands down I would go to the Marriott.