As an ultimate all-in-one room it's still missing toilet and kitchen corner, assuming the thing in front of that tub is a bed. ;)
Oh don't worry the toilet is there, on the left next to the shower. I didn't plan to render that so it's almost empty ^^
The black room is a dressing (an idea from my ex-gf lol), the IES lighting didn't go too well.
The kitchen is there too but you can't see it from this camera view. Here :
See that red thing on the right ? That's part of the kitchen ^^ There's even a whole room dedicated to food supply, like in a restaurant :p
In the end it seems impossible to put everything in a single room, so in the future I will try to put more open spaces between the rooms... easier said than done !