A:AnswerYou can wash out the plastic bean container but you cannot introduce water into the grind chamber.
The grinder comes with a tiny brush. Instead, I use old discarded toothbrushes to brush out the grinder area and then a hand-held vacuum.
A:AnswerAssuming that you, like I, prefer a bold brew, I use multiple coffee measures per 8 oz,
The plastic grind receiving box in the lower part of the grinder can contain about 14-16 coffee measure scoops.
A:AnswerYes, and in fact, I found that for espresso, I had to back off the grind lefel (you rotate clockwise the bean counter to make a finer grind).
Wide range of settings but see my review -