I see you're from New Orleans, I used to live in Ocean Springs, MS.
If you're looking near the convention center, the full service Marriott is right there. Last time I was there, it was a little tired looking, but service was good, sometimes looks aren't everything (as in the case of Hojo's). The Hilton is right there too, I've never stayed there though. Those two are walking distance. The Doubletree Suites is down the street, that's a nicer property than the other 2.
If you want a suite type of room, down Harbor Blvd. is Homewood Suites (which is right next door to the Hyatt) and this is our hotel of choice when staying in the area, but there is also the Residence Inn right there (our 2nd choice but not as posh as Homewood) and they have suite types of rooms with a free light dinner on Tuesday-Thursday nights and free breakfast buffet every morning and it's a good one. Same with Residence Inn on Clementine, not really walking distance either but this one is close to many restaurants and a theater. Marriott Suites is on the same property with Homewood and Crowne Plaza, right across the street from Hyatt. There are restaurants on this property: Joe's Crab Shack, Red Robin, Oggi's (sports bar, we like the take out food) and Hyatt and Marriott Suites have Starbucks inside. You will need to take ART or drive over to the convention center or DLR. Hyatt/Crowne Plaza has their own bus with priority going to Hyatt guests. But it's a quick trip, a mile or two.
Hope this helps.