The place was at fault. There were crumbs in the edges of the floor in the kitchen and other nooks and crannies. If you don't want insects infesting your place,

The place was at fault. There were crumbs in the edges of the floor in the kitchen and other nooks and crannies. If you don't want insects infesting your place, you should keep it clean and not feed them. I stayed in other AirBnBs too, and never saw cockroaches that size and in those numbers.