The apartment is really big and bright, the room has private access to the bathroom. There is a small room adjoining this one where two more people can stay. Both bedrooms are accommodated with double beds and furniture.
You can smoke but it has to be by the window. We just ask you to keep the room and the common areas relatively clean (like clean your dishes after you've eaten, stuff like that). For the sheets you can just put them in the bathroom or at the foot of the bed when you leave.