Like being in a film!
Before you go, watch the French film Amélie, its a funny heart-warming tale and some of it takes place in Rue Mouffetard.
The flat was lovely, clean and homely, ideally situated for the Metro and within walking distance of so many great shops and restaurants we could have easily eaten there every night of the week. The wonderful boulangerie opposite the flat was a mainstay of great bread and croissants and other delicacies.
You can walk through the Jardin des Plantes to the Seine (15mins) and catch the Batobus for a more sedate journey up to Notre Dame, Eiffel Tower etc, and you can Salsa here on the quayside with the locals in the evenings.
The neighbourhood was friendly and quite busy, with a good mix of tourists and locals and stayed active until quite late, so if you like sleeping with the windows open and you're a light sleeper - take some earplugs.
There wasn't a TV but why would you need one when you could watch the world passing by below you out of the apartment windows and listen to the local buskers. Better yet, go downstairs and sit in a cafe isn't that what you're coming to Paris for?
As you can tell - my wife, teenage kids and I had a wonderful time here and would definitely go back.