I booked this inn via venere.com group for 9000 yen/night for double room. It was damn difficult to find this place although we already print out the map of the hotel. Apparently some of the key queue places were written in Japanese alphabet. To make it even difficult - apparently the word "Dormy Inn Sapporo" is only written on THEIR WELCOME MAT and apparently they are in this shopping arcade lane so it's covered by lots of shops. They have big boards but it's in Japanese - so we didn't notice it and walked the block around for like 1.5 hours before finding this place.
Anyway, the room itself is basic but sufficient. There is a distict smoke smell although I booked for non smoking room. They provide towels, bath robes, air con, sandals and surprisingly there's a small kitchen set where you can actually boils water. They also have empty fridge in case you want to keep drinks cold. The bathroom/toilet arrangement is a bit strange. The shower is on top of a sink.
About the room size, I find it adequate (as I was literally backpacking) but perhaps if you have large luggages, you will complain. There's a flat TV but mostly Japanese channels. We can hear the sound of the street from outside but it didn't bother us. Not sure whether you can leave your luggage in this hotel after check out as they have these big coin lockers. Even for umbrellas you have to buy for 600 yen (no free rental). The bed was OK, but not top quality spring bed (the pillow is from straws btw - but amazingly it's not uncomfortable, it was OK) If you're into communal bath - there is a public bath as well but we didn't try.
Surrounding it there are a lot of minimart and shops so it's not difficult to find food or souvenirs. I went home late several time (like 11 pm), it does't seem like a scary neighbourhood and feel quite safe. It is walking distance with Sapporo's tourist sights such as Akarenga (Red Brick Building), Sapporo Tower, Nijo Fish Market, etc although you might get tired if you're not in tip top condition.
Final verdict? Yes, recommended. Value for money. Just make sure you're able to find the place.... Btw, the receptionist doesn't speak very fluent English (at least not the lady that attend us) so if you got lost and try to call them, not sure whether that can help.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.