Stayed in this hotel for five nights in Sept 2006 to attend a conference at the Sapporo Convention Center. It's really a very nice hotel - everything was neat and clean, the staff was friendly, and everything worked. The lobby is large and spacious, with a central atrium. The room I had was pretty small, but probably about normal for Japanese standards. It was about 12 ft by 8 ft with a double bed in it. Not much room to move around, but they managed to squeeze in a small desk, TV, chair - the usual.
When I booked it, one thing I had a hard time figuring out about this hotel was its location and convenience to the rest of the city. The photo on the web shows it all by itself, as if it were out in the suburbs. That must have been taken when it was first built, because it's definitely in an urban setting now, with buildings close in all around. It's really not far from the main Sapporo train station. You can take the subway, or even walk, as I did when I fist arrived, not wanting to try to figure out the subway right away. It was about a 20-30 minute walk. Staying there for the week, I had no trouble getting around to various parts of the city, either by subway or walking - Sapporo is a pretty walkable city. The convention center is an easy subway ride away (4 stops, no change).
In all, not a bad place to stay at all.