Frequently used by the Mathematics Department for guests housing:

Hotel Mister Bed** (43-50 Euros)
Unexpensive, conveniently located in the center of Lille (pedestrian area, see the map below).
57, rue de Béthune, 59 000 Lille. Phone: (+33) 3 20 12 96 96 - Fax: (+33) 3 20 40 25 87.
Map of the center of Lille     (Rue de Béthune is in the center of the map)

Hôtel City Maeva Vauban** (56/day, 45/week, 31/month)
Interesting for somewhat longer stays: studios, kitchens.
17, rue Colson, 59 800 Lille. Tél : (+33) 3 20 15 43 43 - Fax : (+33) 3 20 15 43 78.
Map of the center of Lille     (Rue Colson is on the left side of the map)

Hotel Brueghel** (63-75 Euros)
Good middle class, close to the railway stations but in a quiet area.
3-5, parvis Saint-Maurice, 59800 Lille. Phone: (+33) 3 20 06 06 69 - Fax: (+33) 3 20 63 25 27.
Website

Hotel Saint-Maurice** (65-85 Euros)
Close to the Brueghel.
8, parvis Saint-Maurice, 59800 Lille. Phone (+33) 3 20 06 27 40 - Fax: (+33) 3 20 42 13 29.
Website

Hotel Ascotel*** (60-70 Euros)
Located on the campus of the university, at about 100m from the Mathematics Department.
Avenue Paul Langevin, 59650 Villeneuve d'Ascq. Phone: (+33) 3 20 67 34 34 - Fax: (+33) 3 20 91 39 28.
Website
 

Additional list:

Hotel Agora** (50-75 Euros)
14, rue du Molinel 3-5, 59800 Lille. Phone: (+33) 3 20 31 55 52 - Fax: (+33) 3 20 06 27 54.
Website

Hotel Best Hotel** (45-55 Euros)
66, rue Littré, 59800 Lille. Phone: (+33) 3 20 54 00 02 - Fax: (+33) 3 20 54 00 06.
Website

Hotel Chagnot** (60-70 Euros)
24, place de la gare, 59800 Lille. Phone: (+33) 3 20 74 11 87 - Fax: (+33) 3 20 74 08 23.
Website

Hotel IBIS Lille Gares** (60-80 Euros)
29, avenue Charles Saint-Venant, 59800 Lille. Phone: (+33) 3 28 36 30 40 - Fax: (+33) 3 28 36 30 99.

Hotel Kyriad** (55-65 Euros)
21, place des Reignaux, 59800 Lille. Phone: (+33) 3 28 36 51 18 - Fax: (+33) 3 28 36 51 19.