 The hair dryer is the old style one stuck to the wall and not very powerful It is most probably not a big issue just keep it in mind and maybe take your own hair dryer with you like I did 
 Super good location just a few steps from the metro and from Champs de Mars Staff is very welcoming and helping I came 3 hours before the check in and they gave me the room within 20 minutes Almost no noise surprising for Paris clean room very good bed Quite good breakfast 