We spent years with alcohol stove and no heater for all the usual reasons. We switched to propane stove, and added a vented propane heater and would never go back.
Properly installed and handled the propane is not really a problem, and you're guaranteed no odours, lighting problems, etc. Diesel stoves can also be difficult to "turn down" during the shoulder seasons, getting uncomfortably warm at times.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)