Show the details and star ratings of the 3 least expensive hotels.
return hotels ;return price of #1 ;return the  3 lowest #2 ;return #1 where #2 is  in #3 ;return details of #4 ;return star ratings of #4 ;return #5 ,  #6
['select', 'project', 'aggregate', 'comparative', 'project', 'project', 'union']