We stayed this hotel for 1 night. Hotel room was quite small. We emailed the hotel ahead of time to ask for an extra bed and received no replies. At check-in, they had no extra bed and only smoking room.
The room carpet didnt feel very clean too... The good thing was the location (near to AEON supermarket), FREE parking (YAY!) and the ice maker at the lobby area.
I would try and explore other accommodation options if I were to come by Monbetsu area again.