If you like quiet neighborhood during sleep than College de France is what you need. It's located near College de France and Sorbonne, the teaching facilities of Rive Gauche, left bank of river Seine, however, you can reach Notre Dame in maximum 10 minutes walk. The hotel is well maintained, kept extremely clean. The room is reasonable in size, you'll get much smaller room in London for the price. The internet worked fine at my room. There is a pedestrian street nearby that is full (!) of different restaurants, I don't remeber the name, seems like it's rue de la Harpe ['arp] (you can ask the personnel).