If you just want a reliable winter car, this is not the car for you. Unless major things have been done to it, the car will need major work. You will need to fix an oil consumption problem most likely, and the suspension will be worn in the front and rear. The AC shouldn't matter to you if you are driving in the winter only?
If you just want a winter beater, why not something economical with front wheel drive?
These cars are good if you view them as a hobby, but if you just want turn the key transportation, seriously, look elsewhere.
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.
1973 220 (gas)