I think a marble look whether Crema Marfil or Carrera or others is a great timeless look. The real question here is not how it is maintained but are you and whoever else will be using this room be able to be a bit more careful. Marble scratches easily and can stain if abused (something with heavy dyes not cleaned up immediately). It also can stay beautiful for a long time, is not a fragile as it’s made out to be and can be re-polished easily (e.g. Casinos, restaurants). Today there are some really great porcelain tiles that when installed you cannot tell the difference but this will also require creative designing and possible use of real marbles for the bull noses, pencils and other edge finishes because most porcelain tiles will not have exposable edges. This being said, if you can find the look you want in a good porcelain tile I would probably recommend this first but don’t be afraid of using Marbles in a lower traffic space.
One of the things that really help us decide on that question is “How much traffic is in your home?” Sometimes a wood floor can really give a really good continuity between rooms and a nice warm feel to the Kitchen but when there are younger kids or your home is “the place to hang” I usually recommend something more durable like tile. There is a lot of great wood looking tiles today and if the installer does a “random” pattern you can really get the best of both worlds. If you decide to go with an unfinished wood floor I always recommend a few things: 1. Pre-finishing under the cabinets 2. Adding drainage holes behind the Dishwasher and any water source (Ref. Icemaker, Sink…) 3. Adding inexpensive leak detection sensors ($15 @ Home Depot). And last you can always use a Hand-scrapped floor to hide future scuffs.