Irene’s apartment was incredibly convenient. It’s very close to the metro station and a couple blocks beyond is a wonderful cafe packed with internationals.
The elevator was super helpful for luggage and the neighbors are all very quiet. We stayed for a week in the middle of April with highs generally hitting 60 - 65 F. The apartment did indeed get rather warm and we ended up keeping the windows open the entire stay. Luckily we thought of ear plugs - the street noises carries really well in the narrow Paris streets. The hot water in the apartment won’t last more than a single, 3 - 5 minute shower in Ecomode. Be sure to swap it off if someone else needs to shower. The WiFi is fast and convenient. We didn’t use the kitchen once - not even the refrigerator - so we can’t comment there. The bed was a full size and rather comfortable but be sure to bring an extra pillow - only two small ones are provided.