Ok. I've stayed at both of these properties.
Hilton is... a giant hotel. So you have hotel amenities. If I'm at a convention, I consider the Hilton for location. But. During a convention, the banks of elevators can get really backed up. And the hotel floors are BIG while the elevators, all 8 of them, are in the same central area. If your room is far from the elevators you can have quite the walk, down one hallway, then turning left or right down another. I've gotten lost before on floors. And I think the rooms are a bit small.
Hojos: There's a reason it's up to $150 a night. People like the Hojos. Every time I stay there, I think to myself that it just doesn't feel like that much of a value hotel compared to the big hotels in the area. I think the biggest thing that makes it feel like a not big hotel are the toiletries (bars of soap not bottles or tubes of body wash,) and the lack of on-site restaurant. But, as others have said, Mimi's is RIGHT there. And the rooms I get, at least, have coffee, microwaves and refrigerators. For me, a refrigerator is a big deal.
And my favorite part of Hojos, because it's so close to that signal on Harbor, we can cross Harbor and walk straight to the Parks without having to cross so many driveways, deal with smaller crowds and avoid the occasional time share shark. I've walked from the Convention area and my #1 choice is to walk from wherever I stay. I like to have that sense of control. Hojos walk is closer.