Pa r t i I . 6. Right to information The visitors found individual deficiencies as regards fulfilling charges’ right to information which consisted in lack of a  charge’s signature of a  statement of knowledge of the establishment’s rules and advocated completing an address list of institutions protecting human rights to include data of the Helsinki Foundation for Human Rights and the HRD hotline96. Two establishments97 were found to use notice boards to display charges’ personal data, i.e. their weight, height and biography. However, one shelter98 ordered not to send complaints to external institutions through its personnel. It was advised to address these deficiencies. Despite these reservations of the representatives of the Mechanism, it should be noted that the right to information in the visited centres and shelters was generally observed. 7. Living conditions Most visited centres and shelters ensured good living conditions to their charges. 8. Personnel Following international recommendations and the position of the CPT, ensuring systematic training to personnel working with persons deprived of their liberty is essential to prevent ill-treatment. In this respect, recommendations were identical as to the employees of YCCs. 4. Rooms for detained persons (PDRs) 4.1. Introduction In 2014, the representatives of the National Preventive Mechanism carried out visits to 20 rooms for detained persons or persons brought to sober up99 within Police organisational units (hereinafter referred to as the “PDR”, the “centre”). JDC in Grodzisk Wielkopolski; JS in Gacki. JS in Szczecin and JDC in Sadowice. 98 JS in Szczecin. 99 PDRs in: Łowicz, Łódź-Wschód (establishment under renovation), Szydłowiec, Złotoryja, Warsaw II (Ursynów), Staszów, Warsaw I (Warsaw Police Headquarters), Lipsk, Namysłów, Oświęcim, Mońki, Sucha Beskidzka, Nowy Tomyśl, Chrzanów, Kraśnik, Nidzica, Skierniewice, Gryfice (establishment under renovation), Kamień Pomorski, Myszków. 96 97 35