Is sounds as if it is quite dark in that location. It may work better to purchase two plants. Put one on the bench, and the other in a location with better growing conditions. Then switch the two plants every week or so. Snake plants have a fairly slow growth rate, and their upright foliage won't droop during the dark period. But they won't go into the decline that would happen if you left a single plant under insufficient-light conditions for too long.

I hear that ZZ plants are great in those conditions. Not as sculptural, though.

Gyr: excellent idea- I will be doing that!

Renee: what is a ZZ plant? Min

Thanks to you both. I got a snake plant for our bedroom, which receives more moderate light, and a ZZ for the shower bench. Fingers crossed!

I hope it does well for you. My sister in law has two in her dark living room, and they are growing well and look great. I had trouble with snake plant in a dark corner because it rotted from too much water and not enough circulation. I would be conservative with the water.
Renee

I would do as Gyr_Falcon suggests, get two identical plants and switch them out regularly. I do this with a couple of mine and it works well.

Yes, I'll watch the water. I do need to remember to give the plants partial sun breaks, too. - Thanks all!