My bedroom can go as low as 11c in the night... what do you do?.. do you heat bedroom to the right temp for baby 17/18c or just make sure baby is warm? Coopers in with me so hes got his vest and babygrow on and is covered with the quilt. Sometimes i put him in a 1tog sleepsuit but he feels to warm in that. I think hes ok but just wondered what everyone else does? 
