How many days are best to spend in Nha Trang?

Just three days to play. Travel documents: Please be sure to bring your passport. Baggage: Airlines stipulate that the weight of checked baggage for economy class passengers shall not exceed 20 kilograms. Clothing: Vietnam has a tropical monsoon climate, with an average temperature of 24-30 degrees Celsius throughout the year; please bring swimwear, sunscreen, sunglasses, etc. so that you can have better intimate contact with the sea water! Items to bring: Umbrellas, film, sunglasses, skin care products, motion sickness medicine, etc. According to the relevant regulations of the airport, the volume of liquid items carried in carry-on luggage must be less than 100ml. If it exceeds this specification, it can only be checked. Please bring your own sealed bags or other waterproof packaging to protect your electronic products and other valuables from damage when participating in water activities.