Room
Very tiny, but quite functional with all the amenities including room wear. Noise insulation is a bit lacking, so you can hear people chatting outside. For two occupants, it'll feel a little cramped (and a little awkward using the bathroom due to aforementioned lack of noise insulation), but it's fine for an overnight stay or two.
Food
Great breakfast buffet. You may have to wait 5 min or so, but the turnover is quick. We recommend making a beeline for the DIY seafood donburi. They also offer a regional yakult-like (probiotic) drink, which we found very tasty.
Facilities
For accommodations of this price range (though we overheard Japanese businessmen saying the prices dropped after the earthquake earlier this year (2018)), the hot springs setup is quite decent and even had a sauna, as well as a coin-operated washers/dryers. The lobby offers free coffee. The "premium" Dormy Inn across the shopping avenue also offers a free late-night snack (ramen) if you managed to avoid stuffing yourself on local food. They'll also give you free instant noodles if you opt not to have room service as part of their sustainability initiative. Do take advantage of the free taxi rides to Sapporo station--you have to reserve the ride 30min in advance. They leave on the hour and a the half-hour mark, but the driver may call on you early. It's not a horribly long walk to the train station, but with heavy souvenir-laden luggage in tow, you'll want to save your energy in the wintertime for sure. Overall, especially at current prices, this hotel is hard to bet in terms of location and amenities.