The location is excellent, two blocks from Place St Germain heading north (toward the Seine) and one block to Place St Sulpice heading south. I paid €119 for single use of a double room, room #9.
The room faced an interior courtyard, which resulted in the room having very little natural light, but I had indeed requested a quiet room. I peeked into room #8 next door, it faced Rue Bonaparte and was much, much brighter, but it must have also been noisy. The room had a double bed, a wooden armoire/wardrobe for clothes (containing both shelves and hanging space), a small table with two side chairs, two wall lamps over the bed, two other wall lamps on the armoire wall. There was a full-length mirror on one wall, which was a nice touch. The room carpeting was dark charcoal grey, and it looked like it hadn’t been changed, or cleaned, in decades. The curtains and bedspread matched each other, though not the carpeting; they were clearly not new. Inside the armoire, there were paper linings tacked onto the shelves; those liners were yellow and stained. The room wasn’t a bad size for a Paris double. The armoire had 5 or 6 hangers of varying styles and material, but none of them had a bar on them on which to hang trousers. I resorted to hanging my trousers on one of the towel bars in the bathroom. The TV got French cable stations, plus CNN in English. The small room refrigerator provided absolutely no cooling inside. The bathroom was surprisingly big, and modern, not state-of-the-art, but, looking recently-updated. Lots of marble, fixtures were chrome. No electrical outlet for shavers. Deep tub with a hand-held shower mechanism, no curtain. Water pressure was awful. Two mornings out of my four there was no hot water at all. The built-in hairdryer was the weakest one I’ve ever been provided with. Towels were not thick or large, but they were in good condition. No washcloths, of course.
Breakfast is included in the room rate, it consists of coffee, tea, or chocolate, with a croissant and a roll. On the days that I did not have breakfast in the hotel, Madame refunded me a small amount as a breakfast credit, which I did not ask for, so I thought that was kind. The baked goods were not high quality. 18 months ago I stayed at the three-star Delavigne, in an equally good if not better neighborhood, and for about 20- euros more per night we had a lovely twin room of good size, with good showers and hairdryer, in a pretty hotel (breakfast was not included). I do not recommend the Bonaparte as a good value.