A vinage postcard of the Quality Inn hotel in Flagstaff, Arizona. My guess from the clothes and some of the other cards I found this with that this is from the early 1970s.
The hotel is still around and is still a Quality Inn. However, the hotel looks a bit different. The red lettering is now white. The "cocktail lounge" signage is gone. The black/grey building outside is now a pale pink and there is a more permanent fence around the poo, as seen in this photo.