How does one keep cool during the summer months without air conditioner?

How does one keep cool during the summer months without air conditioner?

How does one keep cool during the summer months without air conditioner? I live in a brick apartment on the third floor with no AC. We have a ‘cooling system’ but it rarely cools our apartment. Last year the apartment was rarely less than 90 degrees. Living in Arizona weather can rise to 150 degrees. My apartment is a 450 sq ft studio with a sliding door. There are no small windows that I can set up an AC. So what are my options to make this space livable this summer?
Just some pics

Just some pics

ello.

ello.

please and thank you

please and thank you

to weed or not to weed

to weed or not to weed

Terrarium.

Terrarium.

Grandmother’s Iris

Grandmother’s Iris