The good: The location on a relatively quiet street in Le Marais is great. The apartment is not so big and is on a ground floor but is perfect for 2-4 people who don't spend much time indoors. The internet connection was great. Communication with the owner was quick and very helpful. Check-in was easy and quick. We were given permission to check in earlier than anticipated. The owner was also very helpful in helping us find a place to drop off our bags on our final day after we checked out.
To improve: All in all, the apartment was clean but better care of the bathroom is needed. It's not fun to find hairs here and there. We were not able to get the TV working - but this wasn't such a big deal to us.
Suggestions to future guests: Bring ear plugs. The bedroom in the back has thin walls and one can hear everything outside.