I have 2 kids (toddlers), and I try to do their laundry once a week so it doesn't build up. But it can hold probably close to 2 week's worth of my kids' clothing.
My husband says I should tell everyone that he finds it annoying. I don't think it's as bad as he does.
When I do their laundry, I first put the clothing plus some baking soda into the washer, fill it up, and add about 3/4 of a cup of lemon juice (it's a natural color-safe bleach). Turn the wash dial to 3 minutes then let it sit for half an hour. Drain.
Add about 1/2 cup of washing soda plus detergent to the load, then fill it up with water. Turn the wash dial to 10-12 minutes. Then drain.
Fill up the machine again, and add a cup of vinegar (for a natural fabric softener) plus essential oils (I use 5-7 drops tea tree for disinfectant and 15-20 drops lemon for a good smell). Turn the wash dial to 10-12 minutes again, and drain.
There's a spin dryer attached that I find the most annoying part of washing. It's very small, but it gets the clothing pretty dry. Then you have to hang to finish drying.
Hope this helps! Feel free to ask more questions.