It's unfortunate that you have your bedrooms the way round that you do if you don't like light - I've noticed that my bedroom is incredibly dark compared to my spare room.

(That should confuse a few people reading this ;-)

Presumably that's because the poking-out bit of house containing your spare room and my bedroom casts an enormous shadow on the window of your bedroom at that time in the morning? Not sure it'd work so well in my case, though, because the poking-out bit doesn't have another floor above mine to cast more shadow.

Anyway, the noise from next door would be far worse than the morning sun for keeping me awake, so I wouldn't want to swap...