Colette's apartment was lovely, she gave excellent instructions for finding it and we were shown around on arrival of where everything was.
Then apartment is large but at the same time has a very cozy feel to it, we really felt like we were actual Parisians! The kitchen is quite small but we ate out most of the time and there was plenty of room in the fridge for our breakfast.
We would come back in an instant, the location was perfect, a few minutes away from the Sacre Cour and a 10-15 minute walk to places which were less touristy for dinner. We also managed to walk to Gare Nord in about 30 minutes. There is also a metro station a very short walk away.