Not very large, but convenient and even "cozy", one can say, the airport - at least from the point of view of a Russian tourist: there is almost everything you need, everything is conveniently located, and on the signs - in addition to the Vietnamese, English and Chinese proper, everything is "duplicated" in Russian" (which is very nice!..); Russian is a rarity among the staff - but in general, everyone is friendly, polite, "contact"/"creative", and in terms of communication language, modern translation programs on smartphones help out perfectly!
It's a great airport. Clear. Everything is intuitive. There are currency exchange offices. Everything is very well organized and the queue is moving fast. Friendly staff.