"The overall service was nice; however, there's one thing I would like to mention. About 15 minutes after I checked in and entered my room, a housekeeper opened my door without knocking, which is extremely unprofessional, especially since it's a four-star hotel, and there was no standard procedure. After this incident, I informed the receptionist, but the lady just said, ”We are sorry this happened to you,” without offering any compensation. Frankly speaking, I didn't see anyone willing to take responsibility, and I'm pretty sure this kind of accident will keep happening if no one takes this issue seriously."