DH and I rented Mountain Whispers through Sunset Accommodations 3 years ago and loved it. It was exactly as pictured. 1-BR, 3 BA, pool table, air hockey, gas fireplace, hot tub, wooded view, etc. It was about the same price as a nice hotel, with lots more room.
We have rented another cabin through the same company for the end of March with another couple. Can't wait!
We love driving through the Smoky Mountains, taking hikes there and seeing the waterfalls, etc.
We did Ripley's Aquarium (the tube you go through is awesome, with fish swimming around and above you), the Comedy Barn, Black Bear Jamboree, Obergatlinburg tram, the chair lift ride up to the top, the space needle, lots of miniature golf, Alewine Pottery, and of course Dollywood for a day. There is so much to see and do, we're looking forward to doing things we missed last time (Dixie Stampede, more shows, etc.).
Restaurants we really enjoyed were the Alamo steakhouse, Huck Finn's, Bennett's BBQ, The Old Mill, Applewood Farmhouse.
I know there are so many cabin rental places, it can be overwhelming. We had a great experience with Sunset Accommodations though. Good luck with whatever you choose and have a great trip!