We loved our stay at Julien's apartment. We spent a week there. Its clean, cozy & comfortable. The location in the St. Germain area was the best part of it. The apartment is super close to multiple metro stations, you can walk to pretty much most places or take the metro from here. Sure, its a touristy area but then we want to be able experience as much as possible in a short time and this is the place to be for that. Tons of restaurants, I advise walking around a lot and exploring & trust me, there's great food. I love that we could have coffee at midnight on a week day if we wanted to. Close enough to Paris Nord and Gard de l'est, we were able to take day trips to Brussels and Luxembourg. Over all fantastic apartment & we would not dream of staying anywhere else next year if Julien's apartment is available.
I do want to specifically call out that Julien's kindness to help us receive medical supplies (for my husband's life sustaining equipment) in Paris before we got there was him going above and beyond as a host & just being a very compassionate human. We are very grateful to him for that. He even had coffee with us on the day we left and he seems like a really nice guy. We highly recommend his place!