20 rue Serpentes is a magnificent location in Paris' heart, one block from Blvd St Germain and Blvd St Michel, in the Quartier Latin.
The street is quiet which allows to sleep with the window open. The historical building is beautiful in its architecture and the apartment has high ceiling. The security is fine as you need to pass three doors before getting in the apartment, including the initial door giving access to the courtyard.
Phoenice is a wonderful host, she welcomed us and not only provides a bedroom with its own bathroom but gave us permission to use her living room as well as her kitchen. Having the capability to buy your own fresh "traditional baguette", with some baratte french butter and jam, make your own tea or coffee and not having to go to a restaurant for every meal makes the experience much greater. Some evening we were so tired to have walked so much that we loved staying in with some yogurts and fruits.
Phoenice is also a very nice person in addition to be a great host, she is originally from Tour, studied filmmaking, is married to a Mexican artist and has a very nice daughter. Both were full of great information on Paris.
My wife and I had a great stay, we left with the hope to come back and stay with Phoenice again on our next Parisian trip.