I find a moisture absorbent towel works well
Cold weather does have that affect. I noticed it glamping last Oct. when temps were a few degrees above freezing. I'd lift the blinds in the morning then grabbed some paper towels
I wondered if leaving the blinds up would help? Yes once that heat meets the cold it condenses and moisture is formed...reminds me, important to keep things away from outside walls like cushions/pillows in that environment. I did notice wetness on the slide out wall and moved the dinette cushion and it dried up.
I think a constant heat source and the fan from a dehumidifier moving the air should work...maybe keep the blinds up a little