I would call a good romantic night as having a candle lit dinner with my partner in a scenic restaurant or in a deserted island. Then, after taking dinner I would choose to take a walk along the beach.
I'm an outdoors girl. All about the evening walks around a lake or pond or park. Grabbing some food and sitting down in the grass to eat together. Snuggling and stars. This is actually how my hubby proposed to me. Just the two of us. Perfect.