u/Appropriate-Lab-1532

We would be reaching Hanoi in the morning at 5AM. Our hotel is in old quarter,. Assuming we start at 12 PM, What is the best way to go to Nin Bin, and cover Hoa Lu, Tam Coc & Mua Cave and return to hanoi. Any traveller which offers this for a group of 6 people or whoich do you think is the best and economical way to do this trip