I have hosted since November 2016, and except that a couple used my brandnew bathtowel to wipe their suitcase and left stains hard to remove, nearly all my experiences have been positive.
One beautiful lady from Switzerland who could pass as Hollywood star gave me a Swiss army knife and Swiss chocolate as a gift upon check-in. The first night after she had checked in, we had a power outage due to snow storm, and I felt so bad. I apologized and brought her a candle with a beautiful classical Baroque style brass candle holder. Guess what? She said it was beautiful and romantic thanks to the power outage!
After she returned to Switzerland, we were still in touch, and she invited me to visit her and offered her house for me to stay for free! I have long aspired to visit Switzerland and will consider the offer seriously.
Other positve experiences include a mother and daughter group from China who cleaned the bathroom and kitchen very nicely, a Chinese guy who would invite me to dinner to reward my hospitality (which I have politely declined), a Canadian guy who left gratuity, an Indian guy who shared with me experiences of reciting/chanting Sanskrit mantra...
Tomorrow the Chinese mother and daughter and the Chinese guy will check out on the same day. I guess I will have a hard time again facing the empty and quiet house... But soon I will be able to get over it when I meet and greet new guests... God bless.