Marble tile is a sturdy, durable product, particularly when it is properly cared for.  Cleaning marble tile is as easy as the application of a damp cloth.  All other cleaners should be assessed for suitability; no acidic cleaners should be considered, as acidic materials tend to have adverse long term effects on marble tile.  Cleaners with neutral ingredients only are the best bet (PH 6.8-7.2).  Seek out information from retailers and sellers of cleaners for natural stone to make sure that any products used are designed to be used to clean marble tile specifically.