Some hotels charge an extra "resort fee"-- the DLR hotels do-- which include parking and internet use fees, regardless of whether you have a car or not. HoJo does not; parking and internet are free.
The dealbreaker for me would be the distance. With two little ones, you want to be in walking distance, so you can easily get back for midday breaks. Not only will the kids need it, so will YOU! ART is a pain and not always there when you want it. Especially returning at night, it can be PACKED. Hydroguy's Hotel Rule:
http://www.disboards.com/showthread.php?t=1199862
Before you book HoJo, though, be sure and call them directly and talk to IN HOUSE reservations. Lorealle or Jennifer will get you 15% off the best rate for mentioning the DISboards. That may even out your $10 difference, too.
Hyatt Regency will be more upscale, but HoJo is very nice, and I think the advantages will outweigh the difference in price.
HTH!