Opps I meant to add at Hogwarts to the question. I forgot he had 2 bedrooms...

Any has long as i get to share

I think it's a toss up between the traditional and the Edwardian. They both kind of match his clothes (in the movies)... though the Bookworm one matches his house in Spinners End...

That or Spartan. I always kind of imagined his bedroom as being minimalist; the one place where he could completely relax.

That's how mostly imagine his bedroom. Either that or the traditional one - minus the red drapes :-P

or Bookworm's

It is a castle! Now at home, I keep thinking Spartan. Mainly because after years of a double agent, Spartan gives less places for traps to hide....

:)

Judging by the description in Half Blood Prince of Snape's house and how it looked in the movie I would say somewhere between Bookworm and Spartan with a Georgian 4 poster bed thrown in there. His bed would be grand, not a twin bed, he would have hoped Lily would have shared it with him, probably with built in bookshelves. But not much other decoration besides walls of books just like his living room. Maybe a few arcane chatzkies here and there. And windows showing perpetual rain outside.