Product review (2 stars): Not worth it.
If you read godchagk's review (about 3 reviews below this one), you will have seen much of what I'm about to say.

1) Durability is questionable (keep the load light, folks).
2) Takes me about 30-40 minutes to fill, turn, drain, re-fill, turn, drain (poss re-fill, spin, drain again), wring out by hand, and hang dry.
3) As godchagk said, it's not ideal for the apartment dweller.  Without the spin of a real machine, clothes are still dripping soaked even after manually wringing out, and hang-drying takes about 2-3 days depending on whether there's sufficient sunlight and air circulating.
4) This doesn't come close to removing actual moderately tough stains.  It only really removes B.O. and sometimes very light stains.

I bought this because I thought it convenient for cleaning my work out clothes right away, but it's just not worth the amount of time and energy required.