This baby will be having the 'spare room' which is the smallest room. Having a guest room doesn't bother me as no one who we have stay over has one either so lounge floor on an air bed it is for everyone!
We are lucky with the way the room is that it doesn't have the box over the stairs. For skme reason though none of the radiators in our house are under the windows. So we still are limited by the window, door and radiator.
The cotbed will be in our room at first so all we'll have is a wardrobe in the nursery and some of the toys dd1 has outgrown. We've bought a full size one wuth drawers at the bottom to save room. When she outgrows the cotbed we'll have to rearrange the room to fit the single bed, wardrobe and bedside table in.
It's not as big as dd1s room but hopefully they'll play together so won'rt need two big rooms anyway x