This is a great little spot to take visitors. The entrance is a little pathway in between two shops (a souvenir and a clothes shop) @ 11 Hang Gai. Walk right to the end and head to the very top floor for a brilliant view of Hoan Kiem Lake. You have to try the Cafe Trung Da - ice coffee with a sweet egg froth on top. YUM!
Cafe Trung Da - 35,000 vnd per glass