The only reason for giving 4 stars in some of the comments is due to the apartment's acoustics. However, i'm pretty sure it's the same standard in all of Paris. Short advice for newcomers - take earplugs if you are sensitive to hearing your neighbors. Also, a small rag in the kitchen wouldn't hurt, just to keep your feet warm while making food. Martin is a caring host and you can address any questions to him and he'll help. Otherwise - great apartment and a caring host!