A nice home/office.
By the entrance on the area B you can join a nice home with a private lounge, kitchen, bathroom and bedrooms. A simple kitchen with an extra cabinet above. A wide bathroom with a shower, a plan with a sink above and a laundry below, a separated wc by a sliding glass door; use the shelf-floor to show your private collection or to store your luggages with some vintage ones. In the mezzanine bedroom you can set up a tv or lounge area and even a terrace like area: you just need simple sliding doors (not thermal glass, only cheap pvc panels!) and an outdoor armchairs for reading or chatting!, so with a jungle wallpaper for all the wall from the bed to the terrace, you can create a unique space for your daughter.
By the entrance on the area A you can use the office (or other commercial use) with its own wc and kitchen. But if you need to arrange a dinner or a party you can use it!
For finishing you can make shine the terrazzo flooring, eliminating the old wax, making a light abrasive process and a matte finishing - on the trend now! Match it with wood and marble in the home and wood and dark iron in the office.
Enjoy!