I loved my stay at John's place. It was quiet and away from the bustle. I was in Vegas to see the beautiful sights rather than the night life and crowds, so this was nice. The bed was so comfortable and I liked the wide lounge sofa just as much. Also loved the window locations for catching the sunrise/sunset.
If you are taking tours and don't have a car, do beware that they will pick you up from the strip and from John's that meant 12 to 16 dollars each way (Uber), 6 to 9 dollars each way for Uber to Fremont Experience, about $15 each way to get to Modern Vegan, and about $20 to 25 each way to the airport. You might want to just rent a car....
If I visit again, I would definitely absolutely stay at John's again, but I'd go ahead and rent a car.