Hotel Kyriad, Porte d'Ivry (http://www.kyriad-paris-sud-porte-divry.fr/fr/index.aspx), near metro line 7, in Paris (20 rooms for 2 people, 5 rooms for 3 people, pre-booked until end of september) (Guillaume Lelarge sent them an “official” email to get an agreement on the cost).
Barmonts' farm (http://www.barmonts.fr/accueil_en.html), near metro line 7, 1.5km from Paris, need a confirmation really soon unless we accept to pay 30% right now.