I really like that there's no little tube on the side to tell you how much water is in it. I clean my kettles with vinegar and I know that everything gets boiled, but I still have never liked the nooks and crannies in tea kettles where I imagine that bacteria can fester. That was what appealed to me about a glass kettle. I can see everything and I can easily reach my hand inside to scrub out the calcium/lime buildup.