Which preposition to use with comfier

as Occurrences 1%

I am staying in a semi-foreign hotel which is tucked away in a pocket in the side of a mountain as comfy as a fat old lady in a big rocker who glories in dispensing hospitality with both hands.

at Occurrences 1%

It seemed quite comfy at first, but in a few minutes, goodness gracious, I was suffocated!

in Occurrences 1%

I am cosy and comfy in bed, and I stay there until Amélie has built the fire and got the house in order in the morning.

on Occurrences 1%

Then he shall be all comfy on the sofa, and he doesn't need to play if he don't want to.

Which preposition to use with  comfier