I recently stayed at this hostel and it was a good experience. It was a little strange that there were very few people staying whilst I was there, but it was the beginning of rainy season.
The hostel was clean and tidy, located in a district surrounded by other hostels and guesthouses. The Rooftop of the name was not much to write home about, consisting of a view of Melaka's huge H+M outlet. As a Brit I don't particularly need to see that!
The staff were helpful with recommendations in the local area and making me feel welcome. Melaka has so much history to explore, particularly from the colonial period.
The hostel is a reasonable walking distance to the main tourist areas along with the museums. Getting to and from the bus station does require a taxi or tuk tuk as it is a fair distance away.
Overall a good stay and would recommend.