This is a beautiful flat right in the heart of St Germain Des Prés. The flat itself was very spacious and comfortable. I loved the history of the building. It is old and you can tell a lot, if not all, of the flooring is original. The wood flooring in the flat is the original from the 1800s. This was very cool, but at the same time made me nervous because it felt soft in certain areas. We were very careful when we walked around inside. Another thing I LOVED was that it smelled like fresh laundry when we walked in and everything was very clean.
The place is within walking distance of the Louvre, musse D'Orsay, and Notre Dame, as well a numerous shops and restaurants. We walked to Paul's and had breakfast every morning. It was also a 5 minute walk to the Metro station. It truly was the PERFECT location! The host was also very nice. She met us on time and was very helpful.
The only con to the apartment was what has already been mentioned in previous reviews and in the comments... it's on the 3rd floor and there is no lift. People with leg and knee issues might find this challenging. Other than that, the place was great!