We really enjoyed our stay at the apartment. It is very well situated and the Marais is a lovely neighbourhood which always felt safe and friendly. The access to all the sights is good with a number of Metro stops 5-10 minutes walk away. The apartment itself is bright, airy and spacious and we enjoyed relaxing there in the evenings after a busy day sightseeing! The apartment does have a lot of internal steps up to it which wasn't an issue for us (although quite a challenge with suitcases!) but may be a problem for the less mobile.
Richard and Josephine were very friendly and communicated everything we needed to know with us. I wouldn't hesitate to recommend this apartment and we would certainly book again for any future Parisian trips!