I have stayed a few times at Ziyu's place. The room is always clean and comfortable. Also, it was very quiet, and I always felt safe. When I arrived, the bathroom wasn't the cleanest, but you have to remember you are sharing the house with other people, so it's not Ziyu's fault. I will say that once the roommates knew I was there, the bathroom was cleaner the next day. also, I know had I contacted and communicated to Ziyu any concern, he would have immediately addressed it. that's just the type of host Ziyu is.