We've stayed at Ho Jo's, Fairfield, BWPPI, Park Vue, Candy Cane Inn, Embassy Suites South, Hampton Inn & Suites. (stayed at PPH too, but out of your price range unless you go in the off season)
I've liked something about everyone of the ones we've stayed at, mostly location!! They were all clean, courteous staff, some have breakfast included, I can't speak to the parking because we never rent a car, but I know they charge for the closer hotels (with the exception of Park Vue?) Anyway, like I said, there were things we liked about all of them, and some things not so much. Unless you're uber picky, you should be good with any of those!
We are going in June, staying at Ho Jo's for the first 3 nights, going to Vegas for 2 nights, then back to DL for 4 more nights, where we are staying at the Fairfield again, mostly because I can get an awesome deal using Scorecard Reward points through my credit union, the difference is $265 when I checked for the same nights on their website directly! It's worth it, that could pay for some nice meals for us!! I had to prepay the entire amount and pay $20 (included in price quote) for a service fee, but such a great savings, no worries!! Our kids will be thrilled, we last stayed there in 2010 before the room renovations were done. Great location with McD's & Mimi's so close!