Be aware that this is a rental company.
Also, be aware that the road in front of the apartment is extremely busy i.e. when the windows are open you may literally need to shout at each other to understand a word. Also you will need very tight ear plugs to sleep!
The host itself is reactive to any comments that you make, but execution is not very effective. I once had cleaners doing some additional cleaning - entering the apartment without checking on my consent. A moldy water got replaced within a day. Besides the busy road the general location of the flat as well as the building itself are very good for people looking to stay in Paris for an extended period of time.