A fire pit is a concrete pit that is made by both the concrete blocks or poured concrete, and such a material is a good choice, because it is relatively inexpensive and easy to work. A concrete fire pit will be a permanent feature, though, so if the landlord decides to get rid of the fire pit, in the future, a fire pit of cement will be harder to destroy and then remove.
A concrete fire pit will be pretty low maintenance, cleaning is not often necessary. When spray the concrete with a tube, usually enough to make the surface look clean again. The concrete is resistant to water damage, so stains, deformations, cracks and will not occur often.
When cracks occur, they can be filled with relative ease with the patch cement. Water can penetrate into the concrete, if it is not paid or built properly, so when you build a concrete fire pit, you should be sure to research how to properly build it to prevent damage to the structure in the future.