We had a wonderful week in Le Marais where we walked & used the nearby metro daily. Florence was amazing. Kind, responsive, & let us check in early at 11am! She even let us know in advance about a transportation strike that was planned for our arrival date, which we weren't aware of.
The apartment was as expected -- looked just like the photos. For a European apartment, it was quite big! The bed was comfy & the bathroom was large & clean with great natural light.
There are a LOT of stairs, and the door was tricky to operate as mentioned by other reviewers, but we got the hang of it quickly.
The only minor complaint was that heater in the bedroom wasn't working. However, with the other 3 heaters (1 in bathroom, two in living room), the apartment was still toasty. We were only chilly one night, and the available extra blankets did the trick.
Finally, the bathroom did have a bit of a sewer smell, though that isn't uncommon in old buildings. We got used to it!