I have stayed at both within the past year, and it is a toss up.
HoJo's is farther away, but has a really great water play area that your 6 yo will love. The rooms are very nice, good beds, nice surroundings. Parking is plentiful.
The Carousel is closer, but is probably a little more outdated that HoJos. Although I like the room and the beds a lot. Parking is tighter.
The breakfast at the Carousel is not fancy...but for us it got us off an running. They have 4 kinds of cereal (3 cold, and oatmeal), white and wheat bread to toast with butter and jelly, pastries and donuts (not fancy...more the supermarket variety), oranges and apples. There was coffee, tea, apple and orange juice and milk to drink. It is very basic...but again, when I am at home all I need is a small bowl of cereal and a piece of toast and I am good to go. They do sell breakfast burritos from Quiznos - they cost $2.00.
I think either choice is a good one...I would go with the cheaper choice...just my opinion.
Good luck deciding and have a great trip.