This hotel would be lucky to rate even 3 stars in most countries. They are symptomatic of a race to the bottom, with mass tourism in Nha Trang. There is no pampering lifestyle here. Clientele appears to be Russian and mainland Chinese and the problems arising with unsophisticated travellers is manifest in the way that the hotel treats all guests as the lowest common denominator. Scenes at the buffet breakfast set the tone of the place as an annex of Hades with budget-challenged guest shovelling bakery items, cold meats and the like into handbags for a later free lunch. Greed at the tables is a sight you would not wish to repeat in a hurry.
In the room, no mini bar, no room service, no drinks available for order, stained upholstery and in the adjoining room at least 4 guests in a twin partying until dawn. Staff are pleasant (because that is the Viet way) but generally clueless, except when inspecting breakfast vouchers ( this is supposed to be 5 star remember?). Soviet hostels have nothing on this. For any other advice on ANY topic, better you consult Google.
In the bathroom the usual notice about caring for the environment by re-using your rather thin towel. The message completely de-bunked by acres of single use plastics wrapped in single use plastic outer shell. Your stay here should contribute to the death of at least a single sea turtle.