We had a great view of the Eiffel Tower from the BWI. I put it on my room request (important to note - this can't be guaranteed though) without really knowing what to expect and was very pleasantly surprised.
This is considered a standard view and also overlooks the courtyard where the little cottages are located. We could see the higher fireworks and hear the music from ROE too.
I thought it was beautiful and very romantic, but we love the BWI in general. Much quieter than the YC/BC. Walking into the World Showcase is always a peaceful romantic walk.
The lounge is a quiet place to have a drink either inside or out on the patio. The Flying Fish is a great restaurant and strolling along the boardwalk looking at the lights and activities at night is really nice. The spa at the Dolphin has couples massages too. To me the BWI is more of a grown up place (not in a bad way and we have stayed there with the kids too).
This is where we stayed for our adult only anniversary trip and was very happy with our choice.
Allears has some great tips here:
http://allears.net/btp/romance.htm
Hope you have a wonderful time!