Hostel Kanonia
http://www.kanonia.pl/

10% discount, password: “Entre Amigos” reservation by e-mail: hostel@kanonia.pl

Hotel Ibis Warszawa Stare Miasto
https://www.accorhotels.com/pl/hotel-3714-ibis-warszawa-stare-miasto-old-town/index.shtml

price: single room 190 pln/ per night with breakfast room for 2 people
230pln/ per night with breakfast;brutto za pokój 2-osobowy ze śniadaniem za dobę
password: „Maraton Tanga” reservation by e-mail: h3714-re@accor.com .

Dream Hostel Warszawa
http://dream-hostels.com/Hostels/warsaw/dreamhostelwarsaw/

Dom Literatury
http://www.domliteratury.com.pl/

Hotel Mazowiecki
www.hotelewam.pl

Puffa Hostel Lux
http://www.puf ahostel.com/pl/drugi-obiekt