All hotels on this page are within five minutes of the ENS :

Two stars hotels:

Comfort Hotel André Latin, St Michel
50-52 rue Gay Lussac
75005 Paris
phone: +33 1 43 54 76 60
fax: +33 1 40 51 77 10
http://www.andre-latin-paris-hotel.com/
Email : hotelandrelatin@wanadoo.fr
Single : around 100€  (say that you're attending Broué's conference)
Breakfast : 6€
Hotel André Latin is the main recommended hotel, probably the best deal around. The above rate is a special rate for the conference. A small number of rooms is still available at the time of this comment (Aug. 30) -- if you do the reservation online, you need also to send them an email so that they know that you are coming for the conference.

Hôtel de Senlis
7 rue Malebranche
75005 Paris
Phone : 01-43-29-93-10
Fax : 01-43-29-00-24
http://www.hoteldesenlis.fr/
hoteldesenlis@wanadoo.fr
Single: around 70 €
Double : around 85 €
Breakfast : 6€

Hôtel du Bresil
10 Rue Le Goff
75005 Paris
Tél : + 33 1 43 54 76 11
Fax : +33 1 46 33 45 78
E-mail : hoteldubresil@wanadoo.fr
http://www.hoteldubresil.fr/
(pricing similar to Hôtel de Senlis)


Much fancier and much more expensive:

Hotel Des Grands Hommes
17 Place du Panthéon
75005 Paris
http://www.hoteldesgrandshommes.com/
reservation@hoteldesgrandshommes.com
Tél : + 33 1 46 34 19 60
Fax: + 33 1 43 26 67 32
(around 250 €)

This list will be updated to include more hotels (and possibly fill the gap in the price range...)

Other hotels and travel information may be found here.