During my stay in your hotel, I found that there were serious problems with the mattress in my room. The details are as follows: 1. The mattress collapsed: the mattress lacked support and collapsed seriously, which made it impossible for my body to maintain normal posture when sleeping. 2. Elastic damage: The spring of the mattress may have broken or aged, with almost no resilience, and it feels like sleeping in a bed hole. 3. Affect sleep: Due to the mattress problem, I slept very uncomfortable all night, and my body ached after waking up, which seriously affected the stay experience.