If you are looking for a Parisian B&B experience in an awesome neighborhood, Marc's place is a great fit. Les Halles was a ton of fun and being in the middle of it made that better.
As a clarification, this room has its own BATH (tub and shower) but not its own toilet- that may be a language thing but important to note if you value a private bathroom. The other challenge is that the apartment is up a series of stairs with no elevator option, though Marc and Charlotte were wonderful about helping us with our luggage.
Still, a nice spot in a great place in Paris that could be perfect for you depending on what you prioritize.