It holds a large cup of coffee and it sits tall to put a coffee travel mug under it. You have to add water each time in the reservoir and we only use filtered water so don’t think it has a filterr that needs replaced. WE replaced this coffeemaker for a one cup mini Keurig and found that this one makes a cup of coffee faster. It is more lightweight and takes up less counter space. It only makes one cup at a time so it’s not meant to be a pot of coffee. Perfect for a small countertop and perfect for people who only want one cup without having to fill up a reseviour Ike our big Keurig.