Cluj Airport is getting better all the time. It is a fairly small airport but it is clean efficient and fairly pleasant. Expect long queues at security checks as Romanian authorities are very strict about this but staff are fine and helpful. Passport control is not a problem leaving and hardly one arriving. I have through passed Cluj Airport several times and never queued more than 10 minutes (even late at night on arrival from Munich). The duty free is small and not that interesting price wise two little overpriced cafés in the departure hall and in the international departure lounge. Domestic departure lounge is a bit small but domestic flights are only served by ATR planes. On arrival taxis are safe just walk to the official taxi rank and do not follow anyone asking you in the arrival hall - price is around 30/35 lei into town (7/8 euros). A very decent airport.