Our goal was to visit Warsaw, but cheaply. Hostel Bazyl exceeded our expectation. If you are willing to share a washroom, I would definitely consider here. We purchased 3-day ZTM transit tickets, and tram cars for tram lines 3 or 7 were almost always waiting in the tram loop, literally across the intersection from the door. All of the hostel's staff that I spoke with spoke English well and were very accommodating, for instance arranging a 4 AM taxi pickup to Warszawa Wschodnia (< 2k away by road). The only negative is that the hostel is initially a little hard to find—the main entrance is actually on Kawęczyńska just south of the building, which is across from the basilica (Bazylika Najświętszego Serca Jezusowego). Additionally, Praga is not considered a "nice" section of Warsaw, though I feel this is not an issue in the immediate area. We would definitely go here again and I have no problem recommending it to someone wishing to see Poland inexpensively and without renting a car.