It's great, but an electric mattress pad is more effective than a human - the entire mattress is warmed, not just one spot.
We really enjoy our pre-warmed bed at night. Bought ours at Target.
Audrey
Khan, I second this. You can turn it on a half our before going to be and ummm it is nice and toasty. I turn it off when I get into bed. It would work well for you given how cold you keep your house.