We did not get the breakfast option, or use the parking. This was a 1 night stay. We had a single bed. Toilet was in its own room. Shower room was nice and big. We could shower and then use the bath. The bed was rock hard, but all Japanese beds are. This was about a 5 min walk from the main train station. You could see the bay from our room. They have a bar on the roof, with a good view of sunsets or sunrises. The drinks are good and not too over priced, food options are slim.
There is a small seafood market a short walk away. A small group of izakaya's a couple of blocks down the canal. Train ride from sapporo has some good views. Views are on the right side of the train.
The hotel was probably great during its hayday. Now it is starting to feel dated. Not run down or used, just dated. Staff was friendly, the place was clean. Would we stay here again if we come back through Otaru? Probably. Just wish the beds were softer.