Welcome to Vietnam's Ocean City. Nha Trang has a full-time population that stands at about 200,000 people, but it far exceeds that with the heavy local and international tourist influx, especially in the summer months. It's a fine place to spend  3-4 days surfing, snorkeling and diving, or taking a cruise to the nearby islands. It is also a pleasant spot for nightlife. I am thinking about the famous Sailing Club: A very well known club and restaurant right on the beach.