Yellowstone Inn featured a cabin-like room that was clean and comfortable. The staff was friendly and helpful. There was an initial billing problem through Expedia, but a quick text and phone call to the staff resolved the issue.
Yellowstone Inn accommodations are very basic. Our room had two queen beds and a full bathroom (tub/shower, sink, toilet), small desk with a stool, and a dorm-sized refrigerator and microwave. The floors were laminate. Towels and linens were of a nice quality as were the soaps, shampoo, conditioner, and body lotion. The property is well maintained. There was a small coffee pot with associated coffee and basic supplies. Only negative - the walls between units do not mute all of the noise.
While there, I noticed a minor maintenance problem, and we needed more facial tissue. I contacted "James" who promptly resolved both issues.
Overall, this is a great place to stay and see Yellowstone National Park. Prices are reasonable and competitive. I'd definitely stay there again.