I recently returned from two weeks in Paris. Had a wonderful time. The Hotel Relais Medicis was clean, comfortable and pretty to look at, and the staff were helpful. The location (one block from the Luxembourg Garden) can't be beat.
Two small additions I would make to the Rick Steves Paris guide. I am going off the 2011 edition, so apologies if my comments are no longer relevant.
1: If you love churches, then see Saint Eustache! It's easy to get to (right by the Les Halles metro station), and spectacularly beautiful both inside and out ... in my opinion it's just as much worth seeing as Notre Dame. It has a warm, colorful atmosphere that I did not find in any other church. Also, it's not crowded at all. And there are free organ recitals, just as at Saint Sulpice.
2: In the 2011 Paris guide, Rick suggests that the Treasury at Notre Dame is not worth the price of admission. I disagree. I thought it was well worth 5 euros, especially because it gives you the chance to see some stained glass up close and personal.