Good is only location.Close from Nyugati Railway station and main atraction in Pest.To Buda castle is far but has good underground/bus connetion.Hostel is dirty and noisy.If You want sleep - forget about this.Non stop party on reception or kitchen or dormitory rooms.Shared bathroom:I newer saw worest bathroom in my life - I think that better is in prison.
On privat rooms bathroom is also common ,but looking better.
Rooms are uncleaned with scrap walls.Beware! On this area is many gypsy's and in night can be dangerous.Beware also for pickpockets!
I few years very offen traveling to Budapest and know that Yellow submarine Hostel is one of worest place on this city.