Our hosts were very welcoming and most helpful in helping us to get around the city, even walking with us twice to the bus/metro stations.
Yannick prepared a very nice breakfast the first morning of tea, bread, croissant which was very fresh. The apartment is very close to the metro and busses, both easy walks of just a few blocks. There are many cafes and stores just a block away. The beautiful SacreCoeur and Montmartre are just s short bus ride away.
On the small downside, the atmosphere of the very immediate area is not as upscale as the Montmartre and the building which houses the apartment is older and the entrance hallway seemed dirty and in a bit of disrepair. Maybe this is just Paris, I don't know. The bedroom is in the attic as stated and the bathroom is on the first floor down a narrow spiral staircase (as described) making it difficult for night time visits the the toilet. Don't let this deter you, I just want to give an honest evaluation of the immediate surroundings!
On the plus side again the apartment was very, very quiet at night. Yannick and Gerard were the most delightful hosts and we enjoyed meeting their family. Though the building is older and needs some updating, the actual apartment is clean, warm and inviting. The hosts and price make it all worthwhile and the proximity to the Montmartre (especially the area of Abessess) by bus are a huge plus.
I would stay here again.