Frank's apartment is a great location with extremely easy access to popular tourist destinations and countless restaurants and cafes to eat/drink at. You're also getting a very authentic Parisian experience by staying in a apartment building without an elevator hahaha.
Frank's communication, especially at check in time, was excellent. Inside the apartment, he put together a little binder with helpful information including nearby cafes, pharmacies, and grocery stores.
Overall, I would definitely stay with Frank again.