This is one of the limited masdevallias i can grow, definitely handled 90's last summer... bloomed (oddly I think) last month. Fairly small, leaves are about 1"+ (2.5cm+), flowers taller spikes, flowers are pretty big in mini pleuro world, imho. lol.
I have a 10gl aquarium that's fairly enclosed and the all the water i spray onto them in there sits at the bottom with mosses and whatever is growing... there are orchids that sit on grating on bottom but the water level is sometimes above the grading... this guy sits in a net pot in loose sphag with larger pebbles at bottom of another net pot to keep sphag pot above the water level, apparently the rocks alone somehow move water up to moss because its always moist. I actually only water the mounted ones in there regularly.
I end up growing a lot of pleuros like this and they're remarkably doing well (not that they're all flowering regularly)...