Erick's Apartment is the perfect hidden gem. Located steps from the bus/metro lines, you are in the heart of the Marais in minutes. We visited in the midst of the first hot days of summer and the apartment stayed cool and comfortable (even without an A/C).
We were treated each day with a short note from Erick as to exciting things to do, places to eat, and how to capture the essence of Paris. Check in and out was incredibly easy with great communication from Erick. I would definitely book with Erick again.