My girlfriend and I recently stayed in this hotel for 2 nights and had a fantastic time.
It was part of a longer holiday in France so we drove down from Calais. We had no problem finding the hotel and that was even with my girlfriend map-reading. We left the car parked illegally outside while we unloaded bags and checked in, luckily we didn't get a ticket, and then I drove the car to the underground carpark near the Pantheon. It took about 5 mins to walk back.
The area was perfect for us - quiet at night, but only about a 20 min walk to the restaurants and bars on the left bank. It was also a stones throw from the Luxemburg Gardens and the little Bistros around there.
The room we had was on the 3rd floor and (just) had views of the Patheon. It also over-looked the quiet, tree-lined street below and was very characterful and atmospheric, in fact exactly what we had hoped for. The room itself was fine, a decent size and the bed was massive with plenty of room for me, my girlfriend and the chamber-maid. The bathroom was small but adequate and had a bath that you could almost stretch out in. The whole hotel was very clean and pleasant and had been decorated in a very French style, which is slightly over the top and tasteless in my opinion, but that's what you want in Paris, right?
One morning we had breakfast brought up to our room (they only do this with a continental breakfast) which was great and the other we had breakfast in the dining room where there was more of a choice with fruit, museli and other odds and sods available.
The staff were all very friendly and helpful - specially the chap on the front desk, sorry, can't remember his name...
Overall would definitely recommend this to a couple wanting a relaxing and romantic weekend in Paris.