According to the Owners Manual for my 1981 Europa, Hull 39.
"Principal Dimensions: LOA 36ft 0"; LWL 32ft 10"; Beam 12ft 6",Draft 3ft 11"; Height 16ft 6"; Displacement 23500lbs/ Tons 10.5.
Mine had shower and head combined to port. A PO created a new compartment in place of a wardrobe/dressing table to stbd, and moved the shower there.
Another version I inspected had the combined head/shower and a side cabin opposite with 2 bunks. Can`t recall which sides.
I have seen a 1991 boat advertised here, it looked largely identical to mine, that covers your year of interest.
I call mine "the selfish couple`s" fitout.
I have not heard of any single engine 36s here, twins were usual, I`m aware of Lehman 120s/135s, and some (overpowered) with Volvo 250s.
I hope this helps.
Island Gypsy 36 Europa "Doriana"