A Good's Night Sleep

This is the type of mattress pad I use on my son's bed. (Private Quarter's Deluxe Mattress Pad)

I got a late start on laundry yesterday so he would have to sleep without it last night. After I re-made his bed today I told him that I fixed his bed. He said "oh thank you Mom! I couldn't sleep very well last night". He's 7. Do I really think he could tell the difference? We'll see if he ends up in the living room tomorrow morning...