I've stayed at this hotel twice before on business. It's one of the most inexpensive places in town, and is very good quality for its price. The location is very convenient, right by Nagajima Koen subway station, not far from Susukino (entertainment district) and the rest of central Sapporo (Odori Park, Sapporo JR station, etc all nearby) In total, only about 30 minutes walking distance from Sapporo station, or you can easily take the Nanboku line.
The rooms themselves are small, typical Japanese business hotel size, but great if you don't need much. They're clean, and pretty quiet too, overall very comfortable. A simple breakfast is included with the low price, which is pretty nice.