Other Hotels
Charming hotels (about 110 euros a night)
Michelet Odéon
Les jardins du Luxembourg
Luxembourg
Dacia Luxembourg
Sorbonne
Abbatial Saint-Germain
Nice hotels (about 70/80 euros a night)
Senlis
Trois collèges
Chaplain rive gauche
Cluny Sorbonne
Le home latin
Collège de France
Less expensive hotels
Port-Royal (some rooms at 39 euros a night)
Familia (they have quadruple rooms)

More hotels with these links
Venere.com
Hotels Exclusive