The apartment from Niryis is very good located (a lot of different train/metro stations and the catacombs nearby) and you are in a street with many restaurants and shops. To get to the important sightseeing spots, you can use the metro, it's cheap and easy or you can walk (for example 45 Min to the Eiffeltower). The apartment has everything you need and comfortable beds. One person slept in the living room on the couch, it was very quiet. Two people slept in the big bedroom upstairs, which was directed to the streets, so it was a little bit noisy on the weekend, but i think that's normal for a big city like Paris. If you have problems to go upstairs it will be a little be difficult, because there is no elevator and you live on the 3rd floor. The apartment was adequate for 3 people and overall i can recommend it!