You won't regret staying here!
It is an amazing apartment and Caroline is a lovely host, who makes you feel very welcome!
I stayed in the apartment with my 8yr old son and his Grandmother... we were all comfortable, warm and had plenty of space to also entertain Aunt and Niece.
It is superbly situated for the bustle of Montmartre as you are there in less than 5mins and the Sacré Cœur is 13mins away.
I can't recommend this apartment enough!