Housing can be cheap. In tulum there are apartments for $40/day everywhere. It’s sometimes just a matter of if u want a/c or notGot hotel for MX trip. $406 for the week through Booking.com's app. There were lots of app only discounts. It was something like half off usual price. Within 5 minutes of instructor's home in a well-trafficked area and a lot of students stay there. Good reviews. Aventura Mexicana Hotel. I'm amazed how cheap it is! Can cancel without penalty up to two days before trip.