1: ELECTRIC FLAT TOPS (pros and cons)
  Less maintenance, unless the glass breaks.
  Replacement of the elements /burner switch is less likely to be needed than regular stoves
  Parts are more expensive .
  The flat surface (glass) doesn't need much maintenance unless the glass broke, or sometimes the elements or
  burner switch but rarely happens and also depends on the use and care of tenants. But the parts are
  more expensive in case you need to fix one of this stoves 
  Regular ones need more maintenance because the elements (coils) are exposed to the pots, or any liquid or               damage(eg if soap and water used ) 

2: Burners must work as designed and must work independently of each other 

3: Stove cannot have a lot of rust.