Yann's place is located in the best area! 15 minute walk from Gare d Nord and literally right underneath Sacre Couer. It's also a few minutes away from the Moulin Rouge and super close to the metro so you can easily get anywhere in the city.
Only downsides were the firm bed and creaky floors. If you don't mind a hard bed, then this place can't be beat for location and price, and Yann was very easy to communicate with/quick to respond!