This plant can tolerate some moderately dry areas if it is still being misted, but it much prefers to be moist/damp. If you keep it too wet in my experience, it does not make it happy. Ideally, if you are using ABG or a similar substrate mix, most places in your viv should work as it holds a good bit of moisture.
One other note with this plant, once it gets growing, it can be quite vigorous, so just be prepared to trim it to keep it within the boundaries that you want it (may also want to consider this with the placement when planting).
One other note, is that it grows easily from cuttings, so if you think you want it in multiple places, as long as you keep the cuttings moist (which you should be keeping the tank moist anyways if its for PDFs), it will root easily and start growing.