Tranquil Books & Coffee - 18B Nguyễn Biểu is a cafe in Hanoi that serves coffee and drinks. It sits across from Hanoi North Gate Parish Church and next to a WinMart, occupying the second, third, and fourth floors of an old house. The space has air conditioning, and many guests work on laptops or read, so it stays quiet. The entrance is inside an alley and is hard to find.