@Giang18, Thank you for your kind compliment!
I didn't see anything overtly negative in your post. But I am guessing that you had an unpleasant guest? If the guest was American, they may have made a complaint. In our culture we are taught "the customer is always right," so we feel free to point out things that do not satisfy us. But the first time I went to Southeast Asia, I read about cultural differences. I discovered that telling someone he or she is wrong is profoundly insulting. When I checked into my hotel in Bangkok and was told that I did not reserve a smoking room, I opened my mouth to say, "But you are wrong. I did reserve a smoking room." Then I remembered. So instead I said, "I am so sorry. I must have made a mistake. Please accept my apology for not paying closer attention." After that the management offered to change my room and treated me very well for the duration of my stay.
All hosts encounter people who make requests, demands, or complaints. Yet, like you, even when I think they're being insulting or rude, I just say, I'm so sorry. I will take care of that right away, and please accept a free night. No one has ever taken me up on the free night, because their travel plans are set and they don't have the freedom to change them. But receiving the offer always makes them happy, and I tell them to remind me of it if they ever come back and I will honor it.
Your place is beautiful and I have saved it to my wish list!