The apartment was really perfect, close to the 12 and 4 metro train lines and has tonnes of things in walking distance in the area. There's plenty of places to go eat and explore around the apartment, and it's super nice to take a walk to Sacre Coeur (which you can see from the kitchen window!) and enjoy the area as you go. Roch was an excellent host as well, he gave us lots of tips and places to see while we were there, and he was always happy to help if we had any issues as well!
The apartment itself was really lovely, perfect place to stay for 1 or 2 people. It's got everything you need and we never found it loud even though you're close to the train lines. Super cozy place to stay, and made our trip to Paris so much better, would definitely stay here again!