My husband and I had a great stay at Karim's apartment recently. We flew in for a long weekend from NYC and he graciously allowed us to check-in early so we could go straight from our red-eye flight to his place. The apartment is charming, with windows in every room and two (!) fireplaces. It's a cozy space, but was more than adequate for two adults. The bedroom has a gorgeous view of Sacré Coeur and the other windows overlook a lovely courtyard. It's on a bustling street with plenty of cafes, stores, and other attractions, and it's an easy walk to several Metro lines. We loved exploring Montmartre and found it very easy to access other parts of the city as well. I will note that you can hear some of the street noise from the bedroom -- it didn't bother us at all, but people very sensitive to sound may want to pack earplugs.