My partner and I stayed at Julien's place in Le Marais for four nights. Pros included a fantastic location, easy access to the metro, an aesthetically pleasing apartment, and a good sense of security to the building. The host was also very efficient with communication and helpful with suggestions. However, it's important to note that the seven flights of stairs were tricky to navigate with narrow and uneven steps, especially while carrying heavy suitcases, despite us being relatively fit and healthy in our twenties. The apartment was also quite small with slanted ceilings, which is hard for people of average to tall height. Apart from those points, we were quite happy with our stay.