If you want a good central location in Paris at a good price with a responsive host, look no more.
My wife, daughter, and I stayed four nights and were very pleased overall. You are a six-minute walk from one subway line and about 10 minutes from another, which means you can get around Paris with ease. You are even within walking distance from sites like the Paris Catacombs if you do not want to have to rely on the metro exclusively.
The best part of this stay was Alberto's responsiveness. Before, during, and after the stay Alberto was always on top of things. You don't get this level of customer service from very many hosts!
Thanks, Alberto, for the wonderful stay!