Everybody visiting Budapest must stop here! I can guarantee it is the best view of the city. I went there during the day and it was very safe, don't know about night time.
You can reach the top from two different ways: 1 - from the cave church, up the hill, trough the trees and 2 - from the road on the opposite side. The first one has the prettiest view until reach the top but loads of steps. You will have to follow a sign which is an green triangle inside a white mark. Good lucky!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.