My all time favourite issue with modern houses: in the basement somebody knocks on the wall, and four floors upwards somebody else says "Come in."
Also: the cold, soul-less, hostile-to-
Gemütlichkeit, ice-cold looks of modern architecture. Looks that are so sharp that you can slit your wrists with them.
I demand three things to define a fine drey for me: protection/defence, solidity,
Heimeligkeit (Coziness? Homeliness?) What I do not like is modern houses with wide open windows from the ceiling to the floor that give the inhabitants the feeling to be goldfish in a glass. Walls made of glass. Terrible.
A small medieval castle is fine with me. Or a badger's burrow with a periscope.