Let me apologize for RiverOtter who didn't read the choices given. :funn:
Cafe Tango has great food and service. The atmosphere is cozy, and well suited for a quite couple to dine.
Gravel Road has great food and service, both leaning on the side of "excellent." The atmosphere would be a little more versatile, giving a cozy feel for a quiet couple, but also making larger tables feel very welcome. The front dining area is a little more casual and kid friendly.
So, I guess it depends on your mood, cozy vs a little more exciting and fun. Both are great.
I've eaten at Cafe Provence while Sandor was cooking, and the food was great. Sandor is no longer cooking there, and the menu is rich and hearty with heavy cream sauces, and such -- Old school French. Atmosphere is French-Country. Service is good.
I think, out of the three choices given, I would choose Gravel Road. Cafe Tango would place second on my list of choices, and I would substitute another option for number three.