Little Hanoi Hostel, 48 Hang Ga street or 32 Le Thai To street, (by the lake). Come to the hotel first, you will pay them in font of our receptionist to be sure it is correct amount of money.
Should take the picture of the car with number on and driver before getting in. The driver will not do any harm to you. Vietnam is peaceful country, you are protected by our police anytime, anywhere.