Everything worked in the apartment just fine and the Hosts manager accommodated an early check in which was helpful. He showed us how to use the appliances and gave us 2 keys with the apt address and security code attached. One of the keys was stolen from me in a hostile pickpocket incident on the subway. That created a security concern for us for the remainder of our stay. The cost of the key replacement and estimated lock replacement costs are very expensive in Paris. Be forewarned. Always Separate address info from keys. Ask about lost key replacement costs up front.
I also want to clarify that you need to pass through the larger bedroom to enter the second smaller bedroom. The building was quiet and we never heard any noise above us. No street noise either.