The surface of stainless steel is smooth and solid and thus easy to maintain. Daily cleaning is easily done with a clean, damp cloth. Steel worktops should then be wiped with a dry cloth to avoid lime deposits. Note that the steel countertop can be welded together so that dirt and bacteria cannot hide in joints and cracks.
Similar to steel sinks, steel countertops will get minor scratches which must be seen as a part of the ongoing patina. Other than that, steel requires no special maintenance and is not least very hygienic.