We're a young American couple in our earlier 30s that passed through Paris for a weekend during our travels through Europe.
Paul was very helpful with making sure we had all the information we needed to navigate our way to the apartment. He was waiting at the apartment for our arrival to give us a run through and hand us the keys.
There was a book that Paul put together that had a lot of tips for getting familiar with the apartment and recommendations for food/drinks in the area.
The apartment and area is very safe for singles and families. It has two heavy-duty locked doors that you have to go through before getting to the staircase. As Paul and many others have pointed out, there are 4 flights of stairs. It didn't bother us at all, but something to keep in mind if you have lots of heavy luggage, baby, etc.
The apartment itself was very clean and unique. It has nice ambient lighting and everything you need to get by during your stay. It has plenty of windows to keep a nice breeze through the apartment on warmer days. It's also very quiet. The bed was comfortable and the views were incredible.
The neighboor is located in a nice location. It's quiet, safe, and walking distance to a lot of things.
We popped into several bars in the neighborhood and they were all very cool, unique, and "non-touristy." On Sunday, there's a huge market up the street with lots of vendors selling random goods, souvenirs, and food. We went for breakfast and had some delicious savory crepes.
Overall, we had a wonderful experience, have no complaints, and thoroughly enjoyed our stay. I would recommend this apartment to friends and stay there again.
Ps. Do yourself a favor and Google "La Petite Rose Des Sables restaurant." Read the reviews on tripadvisor. It's literally the best dining experience we have EVER had. It's a 15-20 minute walk from the apartment. For AMAZING crepes, lookup "Chez Alain Miam Miam." It's a big reason why my fiance wanted to go back to Paris. It's a 15 minute walk from the apartment. There will be a big line, so expect to wait a while. But that's a good thing, right!? I do hours of research for places to eat when I travel, so you can trust these recommendations. :)
And last, if it's your first time in Paris, the Fat Tire Bike Tours are completely worth it. We have done both the day and night tours during our last couple visits to Paris and enjoyed each one equally.
Enjoy your vacation!
Thanks, Paul