Hello, I’ll be flying from Hong Kong to Istanbul on business class by TK soon. My ticket is free with R class. I understand I should be able to access the lounge of 1-Plaza Premium, 2-Royal Orchid Lounge (TG), 3-Sliverkris Lounge (SQ), 4-United Club (UA) in Hong Kong airport. Will I be able to access all lounges? Or am I only allowed to access one of them? Which one is the best among them? And which one provide a good shower facilities? Thanks.