It's tough because it's one of those songs that's good for couples just to hold each other and sway back and forth in place.
I would do either int. rumba or bolero, but those require good technique, or their not really worth doing. Often times, other posters to this board will recommend something called Night Club Waltz to those slow 4/4 numbers. I don't have a clue what that dance is (only that it's not a waltz). Check out the forum on wedding dances, and read the comments about NC waltz to see if you can pick up some ideas from there.
Good luck.