Location is why you choose this apartment. It’s 5 minute walk to the St. Michel Metro which has the 4 line. It’s on the 5th floor but also has a small lift. You’ll definitely be secure with three different locking doors in the lobby.
Henri is a great host and very accommodating to our requests.
The flat overall is very simple. Three of us did just fine. Beds are very simple ikea-like foam. There’s a nice clothes washer. Kitchen is very simple. We really didn’t cook on this trip (does anyone on a trip to Paris?).
The best part, cracking the window for an afternoon nap listening to the buskers on the plaza in front of Notre Dame.
PS you don’t have to get up early for a kiosk ticket for the ND tower tour — just download the “Je File” app which is now called “DuckTheLine”. It worked perfectly for us allowing us to reserve a 20 minute time slot for the afternoon. The app sends you a text reminder. You pay for the tour once you check in and climb the first set of stairs to the cashier.