We liked the Comfort Inn and Suites at Dollywood Lane when we stayed there a few years ago. The rooms and breakfast were nice, the location was great and it looks like the rates are reasonable for your dates.
Our favorite place to stay is Gatlinburg Falls Resort. We're staying again in May. I'm too new to post a link, but it's at gatlinburgfallsresort.com. It's peaceful and quiet there, but still close to the attractions of downtown. It's not cheap, but when you consider that you get a full kitchen and a grill so you can eat some meals in your cabin, that saves a lot. Plus most of the cabins have video games, game tables and a hot tub, so you might not need to visit as many pricey attractions. Many of the one bedroom cabins have sleeper sofas or bunk beds for kids, or if you're vacationing with others, you might be able to split the cost of a two or three bedroom cabin. The cabin we had was even nicer than it looked in the pictures.
Pigeon Forge/Gatlinburg is probably our second favorite place to go, next to Disney World of course. Have a great time!