Being a photographer, my eyes were open to everything....I don't think I can pick one thing that stood out more than another.....The food was great, people friendly and at that time of the year, the city was not overly crowded. The hotel I stayed in last time is called "Hotel Raspail Montparnasse". It was rather small but I didn't spend much time there. It was very clean and the owners were very helpful with my frequent questions. I could see the Eiffel tower from my window which was pretty cool at night. The metro as well as many nice and famous restaruants were close by. See the hotel at http://www.charming-hotel-paris.com.
Mark