I find it somewhat difficult to find Lucky Bamboo that has not been tortured into odd shapes (bent, braided, etc.), but did see some plain ones the other day in, of all places, an Office Max store. I also saw a grouping of a narrow row of snake plants in an interior hallway that caught my eye. I've usually seen this in a clump in a round pot, but stretching them out in a trough was a much better look for what I'm after. That would likely be a better choice.
Will, to belatedly answer your questions, the window is about 5' square and sits about 2' up from the floor. The main pane is rain textured with a clear top opener. No covering of any sort on it. The planter would go partially under and to the left of the north facing window. So, yes, definitely low light, but a fair amount of it.
I may try dividing my clumping bamboo and simply siting it on my enclosed back porch - it is unheated, but insulated, with picture windows on 3 sides (east, south, west) set up 3' from the floor. I'm trying to overwinter a eucalyptus in that space this year.
Re the niche behind the toilet, whenever we get around to re-roofing (perhaps this summer) we will install an east-facing window at the back of the niche which will bring in much better light for that area. That particular niche backs on to the steep side of a gambrel roof, so that window will be more of a skylight.
