he taste is quite unpalatable, but there are options to drinking it in water. One can use a stonger drink such as orange juice. Or a quickie pill can be made: either pour it into a capsule (empty out any old vitamin capsule you have lying around) or into a bit of tissue paper small enough to swallow when balled up.
It lasts as long as MDMA lasts. No different than the same dose in a tablet.