I had a sleep study last night at the Nocturna location on Rainbow Bl in Las Vegas NV. This was the 4th study I have experienced over the last several years. My first two were performed at an upscale location in Santa Monica, California and I had a very positive interaction with the personal there. My third study was in Henderson NV and it was also a positive experience. However, I must say, the sleep study I had last night was one of the best I have had. My first contact was when someone called me from Nocturna to schedule the appointment for my all night stay needed to perform a sleep study. She was very warm, friendly, knowledgeable, and professional. Therefore, my first contact with this business was very good. Also, every contact was good and I felt very confident I would be taken care of properly during the sleep study. I arrived promptly at 8:00 PM as instructed and someone (Trisha) greeted me at the front door. I was pleasantly surprised when Trisha led me to the room where I would be sleeping overnight for the study. It was beautifully decorated (kind of resembled a guest room) with a new comfortable platform bed (plenty of pillows) and a television. The bedroom and bathroom were very clean and appeared to be a new facility. I slept comfortably all night and was awakened in the morning very early but I felt great and well rested (much better than I feel at home)! Thanks to Nocturna (and Trisha) I now have the proper settings for my BiPap machine so can look forward to getting some restful sleep at home.......finally! :) I highly recommend this facility to anyone in need of a sleep study. PS.....I'm kinda picky so most likely if I liked this place.....you will also. Sincerely, Leslie Las Vegas NV 89144