We spent 6 nights at the apartment and it was perfect! I can not say enough about the convenient and safe location. I was traveling with my three teenage daughters so safety was important. I had no concerns, it was a safe and short walk to the metro. The apartment was quiet and just as the photos represented. Check-in/check-out could not have been better.
Some other tips about the area:
We wanted to eat at Restaurant de La Cordonnerie, 20 Rue St. Roch but they are not open on Saturdays or Sundays. The food looked amazing and it was highly recommended. I think you must have a reservation.
The highlight of our trip was a Secret Food Tour in Marais. Our guide (Christophe) was excellent and it was a fantastic experience - worth the money - highly recommend!