Location: if it's not your first time in Paris, and you are quite familiar with the centre city such as La Marais, Latin quarter, Saint Germain etc, then it may be nice for you as well to stay in Montmartre neighborhood where this place is, and enjoy the unique Parisian neighborhood feels instead of commercialized tourist street, especially after a long day of touring attractions, you can enjoy a regular French cuisine in Lepic and abbesses street which is not far walking from this place.
The place: sexy, charming, full of antique and original paintings and photographs. You can sort of feel the owners life from the design work, because it is very personal, and that's makes the place unique. If you are piano lover, there is one in the bedroom, the bathtub is great. Two storage, the upstairs is a studio and bedroom is in basement, which is original stone wall, make sure you get a good bottle of wine because the temperature in basement is perfect to storage wine!
Transportation: Line 4 and Line 12 and 2, Line 4 is very close and take you to center city and is a main line which you can switch to other lines, one thing you need to know that by Line 4, it's about 10ish stops to get to the city centre, direct but long ride, and the Chateaux Rough is very crowded during rush hours. Make sure you are ok with it.
Information: there is a tourist information office in the Place Du Tertre, very close, you can get Paris map and ask for all info, the main one is near Louvre, just google map it. You can get metro map at any metro station, just ask the ticket office for one.
Finally the host: Quite satisfied with Franck, he organized everything and tried hard to make my stay easy. The guy take care of the place Mus is very nice and sweet. He came to clean the place at 11pm the day I arrived because he was in vacation, the second day the door lock broke and he came to fix it the same day. So, before your arrival: make sure you check with Franck few times of schedule issues. Although my check in experience was a bit stressful but I knew Franck tried his best and I should not make a big deal of it. The most important thing was the place was nice and that was what I wanted.
Overall it was good experience for me. You should read the description of the place carefully, google map it, make sure it is suitable for your travel plan in Paris before you book it.