Bernard's apartment has a great location. It is just two minutes to Notre Dame and just around the corner from the Seine. It is also a three minute walk to the metro and there are plenty of taxis that are easy to hail. There are also plenty of restaurants in the area.
Check in is easy and has the option of being able to store suitcases if you arrive early, something that I always look for.
Overall, the apartment is clean, well appointed and in a great location.