Perfect location, 5min walk to Notre Dame & Pantheon, 10min walk to St Michel station (serviced by RER-B that goes to CDG airport). However there is also a smaller metro station 2 minutes walk from the hotel. The area is quiet but very central with some excellent restaurants within a 5-10 minute walking distance.
Room was quite small for two adults (which is something I understand you just have to accept almost anywhere in central Paris) but you quickly get used to it. There was a comfortable double bed with just about enough room for you to maneuvre yourself around it, a smallish wardrobe, bedside tables, big windows and a surprisingly large bathroom with high pressure shower. It was also airconditioned. In general everything was very clean and the room was serviced daily.
Staff at reception speak English and are friendly.
Oh and the french breakfast was fantastic