To visit the Phu Tay Ho Pagoda you will have to take a taxi. The area is visited mostly by locals. Not many foreigners are seen here. To visit places like this is why I recommend a stay in Hanoi of at least one week. It may seem a lot, but believe me, there are many sites you won't be able to visit unless you stay in Hanoi several days.
If you want to visit all Vietnam in three weeks or less (as most tourists do), you will have only two or three days to visit Hanoi. That is why I recommend at least five weeks to visit Vietnam. If you do not have so much time, you will have to come to Vietnam twice. Once to visit the North region, and another to visit the south region.
♥ Visit Tagulandang Island ♥