The Cheapest and Coolest Airbnb Rentals in the USA... From big-city living to cabins tucked in the mountains, these unique Airbnb finds are some of the cheapest and coolest rentals in the USA. Some are luxurious, a few are off the grid, but all are less than $100 per night, making them budget-friendly destinations for Summer travel. Click through to find a fun place to stay during your next vacation.