Note in the back right corner that people are lining up to go through customs. The yellow lamp post is a traffic light. You press the button and if the light is red, customs will go through a quick search of your bags. If it is green you may pass. If you stay in the Hotel Zone you ll get a false impression of Cancun.
Houses are astronomically expensive.
USD 900 if you can find anything left. The other 500,000 people live in the city of Cancun. Prices are much less and it is more like the real Mexico that you will be dealing with every day. So get a hotel in the City. Some English is spoken in the larger stores and restaurants in the city.