Four of us friends stayed at the house in January for a week of skiing. The house has four bedrooms: the master with a king bed (I think), a full bed downstairs, and two rooms with two twins each. The four of us had to draw straws and I ended up with the room in the basement which was the best in my opinion, far away from the ruckus upstairs and with your own bathroom/shower. But the other rooms are more than adequate for sleeping.
It's about a 5 minute walk to town, or a 1 minute drive. If you plan to ski or get out of town, I think a car is pretty essential, as using the bus system would be a big pain. I was there with friends for a week and a typical day was skiing until 3 or 4pm, then to the house, a quick sauna session, and then shower before going to town or grilling/cooking at the house. I read a review that complained about the outdated appliances... this is a house, not a Four Seasons hotel, and while the appliances may be (gasp!) older, they work, and we had no issues making some serious gourmet meals in the house. Plus, I go to Jackson to get outdoors, not to sit around the house being irritated by first world problems like the lack of full granite countertops (the audacity of some people... seriously, how can someone live without granite. Humans aren't meant to prepare food on wood or Formica! /sarcasm/) There is plenty of space and cooking utensils in the kitchen, a washer/dryer, a heated garage, a gym downstairs if you have any energy to exercise after a day out in the tetons, and huge upstairs and downstairs living rooms with comfy couches. It's honestly like being at home, away from home (I also have to deal with the daily struggle of Formica countertops in my own home, maybe I'm just numb to the pain and suffering they cause?).
Overall, an excellent base of operations for a group of friends or a family or two. The house has more space than you'll ever need, every amenity to get you through the week, and it's a killer location because it's walking distance to the bars, restaurants, and coffee shops in town. It even has a sauna, what more can you expect? I'll be going back again next year and will definitely rent this house if it's available. Also, the owner Nanci was a pleasure to deal with, and the house was clean. Highly recommended.