Location, location, location.....pleased with proximity to Notre Dame (open window and the bells can clearly be heard), Metro station, the Seine, other attractions. And small markets for fish, pastry, wine, produce, fromagerie (best in Paris!) within easy walk on Saint Germain. Be sure to take note of the oldest tree in Paris (a locust from 1601) which can be seen in the city park, practically right outside your door. But be aware - 4 flights of a spiral stairs can be a challenge with a suitcase. Pack light!