OPTION 1 is correct i.e. Hanoi.The world's first gold-plated hotel has been opened in Vietnam which features golden cutlery, cups, toilet SEAT and an infinity pool.The five-star Dolce Hanoi Golden Lake hotel in Hanoi, Vietnam, cost £160million to build and offers guests the chance to have a wash in a golden bath.Even the EXTERIOR of the building has been covered in around a TON of gold.Vietnam:Capital - Hanoi.Currency - Vietnamese dong.President - Nguyễn Phú Trọng.