The rooms are clean, the staff are friendly and helpful, and the hotel is an easy walk from the main Hamamatsu train station, several shopping centers, a post office, and attractions like Hamamatsu castle.
Breakfast is free with Japanese and some Western options, and there's an amenity bar with just about every toiletry you could need also free. There is a coin laundry if you need to wash clothes but their dryers are not very powerful and it can take a long time.
They will help with shipping your luggage via Yamato as well.
The rooms are small by Western standards but that's to be expected in Japan.
Overall, I would absolutely not hesitate to stay here again!