My wife and I were very happy with this hotel.
I'd specifically chosen it solely because of its proximity to the Jardin des Plantes (and the amazing museums there), but it turned out to also be a great base of operations for exploring all over the city - especially a new discovery (for us), the nearby Rue Mouffetard, full of great little shops, cafes, restaurants, and bars - and life!
The hotel itself borders on barebones but is really quite nice, especially for the money. Don't expect huge rooms (its Paris after all), and gilt everything. But, you do get quaint modern, clean, rooms which are just big enough, with great beds and amazing views - and friendly helpful staff.
It's always a dumb thing to say, especially in a city as full of special neighborhoods and great places to stay, but we'd happily stay here again.