This place is incredible! It is better than pictured, feels very safe, and is in a convenient location to get wherever you need to go.
If you're a traveler with allergies/asthma, Mark's place is a wonderful oasis. No pets/smoking/shoes on carpet means a reduction of allergens that are hardly seen in short-term rentals.
I've already recommended this to several friends and should we find ourselves in Paris again, this is the place I'd consider staying again!