We stayed in Toya Kohantei during our family trip for 2 days. General speaking, it was well-known that Kohantei is a famous and "traditional" onsen hotel, namely, great location in Lake Toya area, wonderful lake view for the summer fireworks, however, the internal maintenance, and especially its washroom, was relative out of date, if not poor. I already know that before we arrived. Some suggestions here. 1) dinner service could be provided in room during the booking procedure; 2) the lamp, television, and telephone equipment in the room could be upgraded; 3) since Kohantei is a famous hotel in Lake Toya, it faces fierce competition from other hotels in the Toya area, if it really wants to maintain its status a future renovation is necessary. All in all, the staff in the front counter are helpful (their English is good with kind attitude), and we actually did not meet noisy travel tour group in this hotel (fortunately). If people wish to visit Lake Toya next time, Kohantei can be the choice.