This house extension was with object to build dining room for the family by creating very nice space with modern look huge windows.
Our carpenters made wooden step as the other room flooring was not at he same level. And electrician place lighting in there so these steps creates more luxuries looking for premises. And the plumber have to put even two radiators to keep warm the room because when we done all calculation it was not enough. But it do not changed view of room.
Small tinny window gives more natural light as you can see in the pictures. Also here example patio area in garden is at the same level as dining area. And these sliding doors creates connected area with patio as this will be nice place to spend time in summer time.