My boyfriend and I stayed in Alain’s apartment for a long weekend and it was absolutely lovely.
The apartment is really well connected to local transport with metro and bus stations easily within a 5 minute walk. It was also really easy to get the train from the airport to the apartment. The Louvre is less than a 10 minute walk away and there are endless restaurants and patisseries nearby too.
There was some noise from the street later on in the evening and early in the morning from the rubbish collection service, but it was never too loud, stopped us from getting to sleep, or woke us up.
I’d definitely recommend the apartment to anyone thinking of visiting Paris!