My suggestion is when talking to contractor be subtle and ask your questions. Ask if he/she will have a dumpster or trailer to haul away debris. If the don't get dumpster or have a trailer then you probably don't want them to work on your home. Tell them your concern with the only toilet in the house. Unless it is not safe I have always reinstalled the toilet so it could be used at night. A good contractor will work with you in anyway possible because you are the key to more business.
Often times, people confuse the difference between a master bathroom and a powder room. A master bathroom is a large bathroom that is attached to the master bedroom in a house. It is often big in size and contains a sink, toilet, shower, and bathtub. The bathtub and shower are either together or separate. A powder room is different in that it is a small bathroom only containing a toilet and a sink. Sometimes the name powder room is interchanged with guest bathroom or half baths. Powder rooms do not contain a shower, and is usually located on the first floor of a home. The purpose of a powder room is a bathroom for guests to use without feeling as if they are intruding into your home.
There are so many beautiful things to notice about this bathroom that it's hard to know where to start. The concrete sink? The wallpaper? The sconce lighting? The tarnished mirror on the door, reflected in the main mirror? The barely-there ultra-modern faucets? Whatever you notice first, though, you can't but admit that this space is a masterpiece.