Moving and scared

I'm moving out and I found two listings that are in the same building ones is a studio (one big living room with a bathroom) and one bedroom. I have a 3 year old and the studio is $100 less than the 1 bedroom both are great I just don't know what's better and safe for a 3 year old and how to work around it (furniture wise) Do I bring the toddler bed or leave it behind? I have a job that give me different hours every week and I make just enough but I'm afraid of being behind and struggling on other bills and not having extra money any opinions and advice