FPS 2021 venue Espace Hamelin is ideally located in the centre of Paris. Nearby, you can easily find more than 100 hotels.
For convenience, we put a shortlist of hotels that are close to the FPS location:

Few metro stations (Line 6), you can suggest the following hotels:

Other hotels:

More information about accomodation options in Paris can be found at Official web site, Paris Tourism, all about tourism in Paris