In my 20 foot TT with rear bath the biggest problem would be getting caught in the bathroom when a fire started. There would be no way to get to the door or egress window. The egress window is kinda silly on the model anyway. It's right across from the door and the TT is only 20 foot long anyway.
In my house the bedroom and bathroom are on the second floor. In a emergency it would be tough to get out of either one. The windows are not that big either. I have no windows and only one exit out of my basement but, I don't use the basement for anything. I only have one smoke and carbon monoxide detector and it's on the main floor. I do have a dog though. He might panic in a fire, bark, and wake me up.