Roman's apartment was absolutely lovely. He has amazing taste and the place is both well-decorated and has a very spacious feel to it. The bed is very comfortable (and larger than what one expects in most Paris AirBNB's). There is a nice living room space (not huge, but with plenty enough room and seating for two couples). The kitchen is well-stocked for guests, and Roman leaves meticulous but easy to use instructions for using everything that the apartment has to offer.
The location bears mentioning as well. You are right in the center for the Les Halles area, where there is much shopping, restaurants, and bars. The lovely Montorgueil, Beaubourg, and Marais neighborhoods as just a few steps away. It's definitely an area where one feels less like a tourist (which I think is very nice) but there is still lots of commercial hustle and bustle.
Lastly, I would be remiss if I didn't say a few things about Roman. He was a wonderful host. He met us promptly at the apartment and gave us a complete explanation of the space and recommendations for where to go around the area. He was even gracious enough to allow us to check in early since our flight arrived in Paris in the morning. He was also very attentive and responsive to any questions that we had. He checked in on us daily and gave advice on where we might consider going (particularly since there was a transit strike during our visit).
I highly recommend staying here. Great spot!