Hotel Doubletree by Hilton a Nanning

Hi, I stayed at Double Tree hotel at WuXiang, Nanning. Overall the environment is clean and spacious and the senior staff is much helpful to provide assistance as I was first time at Nanning. Unfortunately, on my last day of visit on 17th March, I encountered a bad experience with Luckin Coffee stall at Double Tree Hotel. A one man staff attending to several orders totally ignored me while I was waiting for his attention to make order. Understandably I tried to wait however, he seems so engrossed over his tasks hence, I get his attention to said I need a cup of coffee and he just said scan the code...I scanned with my usual scanner and did not work out, and revert to him, he then said use Weixin. As this is my first time, I find it difficult as not familiar and I gave up since he doesn't bother to render help. It was very disappointing to experience this after having a good impression of Nanning generally. I really hope the Hotel can be more friendly as this is supposed to be a four stars hotel. Best regards Wendy