A toddler bed uses a crib size mattress so if it is a space issue it might not help. We transitioned DD1 at 22 mo to a full size bed. It is wide enough we never needed a rail and one side was against the wall. I think, personally, toddler beds are a waste of money unless you have a convertible crib already. I would just skip the toddler bed and go to a twin with a side rail.
April, mommy to Haylea (8/18/09), Hannah (5/22/11) and baby Hogan due 12/12/12! *sent from my iPhone*