L.S.
Hi Dielle,
When I have traveled with my daughter and we have stayed in hotels, she sleeps with me. I also put pillows on the other side to act as a bed railing.
Another option is the toddler deluxe inflatable bed. I found it at www.onestepahead.com. It is very similar to the aerobeds but designed for a toddler and it has five inch sides to prevent child from rolling out. We used this last year when we stayed with her cousins for 6 days and it was fantastic. It inflates and deflates within a few minutes and packs into a small travel bag.
Hope this helps.
L.