Product review (3 stars): Works great in my RV (Update after a year of use: Dishwasher has died.)
A great little dishwasher. I've been using it daily, sometimes twice a day, for months now, and it does a great job. I bought it for my RV, because I got tired of doing dishes and didn't have room for a big one. It handles most dishes and pots without much trouble; sometimes I'll have to hand wash something that didn't quite come clean, but it's nearly as good as big dishwashers I've used in the past, and I definitely don't regret the purchase. It seems reasonably well-built, installation (such as it is, since installation is just screwing in the connector on the faucet) was easy, and it is reasonably quiet. I use it even while sitting right next to it and I don't find it uncomfortably loud. Sometimes when it drains it startles the dog, but even that's not really all that loud.

Make sure you measure your counter where you want to put it; it's small for a dishwasher, but still big for a countertop appliance.

My only minor complaint is that my Fiestaware plates don't really fit very well; it says it works with 10 1/2" plates, which they are, but because they're thick, I have to lean them forward rather than backward and they still scrub the top of the washer when I close it. It there were an extra 1/2" of clearance, they'd fit perfectly (though I'd still separate them with an empty slow in between each plate...they don't come clean if every slot is filled, again because of their thickness, I would assume). Nonetheless, I'm used to loading my plates now and I rarely have more then three full-size plates to wash each day, so it works out fine for me. I definitely wouldn't want to go back to handwashing everything.

As an aside, if you're in an RV, you'll also find this saves water over handwashing. It only uses ~3 gallons per load. Even when I'm trying to conserve water, I use more than that when handwashing. That's great for when I'm off the grid. It does require either a generator or a big inverter to run it, because it has a water heater built-in, so it'll draw maybe ~5 amps when running...if you feed it hot water from the house water heater, it'll need less AC power, but still needs some AC to run.

Edit on 2/3/2018: After about a year of great service, it's stopped heating water. If I feed it pre-heated water, it'll still do a decent job (though it isn't hot enough to sanitize), but if I give it cold water, dishes remain dirty and the detergent doesn't dissolve. Currently looking into whether it's still under warranty and what I can do to fix it, as it's become pretty much useless without hot water.

Edit on 4/18/2018: The dishwasher got worse...even if I give it hot water it leaves dishes dirty and mostly dry, like it's not even trying anymore. I finally got around to opening it up to see if I could figure out what's going wrong, thinking maybe it was clogged up. I've found it's probably not the heating element that's gone bad...it reads 24 ohms, which is about what I would expect a little heating element to read (though it could still be bad, maybe? I'm not an expect on diagnosing heating elements and I don't have a variac handy to turn it on outside of the unit). I think it's one of the temperature sensors or something on the control board that's gone bad, though there's no evidence of burned out parts on the board and the fuse is good. The heater is part of the main water pump, which SPT sells as a unit for $55. I'm hesitant to replace the whole thing, as I'm not entirely confident it'll fix it. The pump seemingly works fine. At least, it blasts the water out of the outlet very strongly and I can see water flowing through the hoses when I have to top off, maybe that's a secondary pump, hard to tell as I can't figure out the path the water takes in and out without pulling more of it apart. And, the element seems to be resisting as it should (heaters just heat up because of resistance). So, if it's something on the control board that's gone out or one of the sensors I'll be out $55 and still have a broken dishwasher. I wrote to the company about diagnosing the problem and got no reply after several weeks. Anyway, I don't really like having to work on a still practically new appliance and I don't like that they don't reply to emails, but it does look like I can get the part to fix it, probably. I'll follow up after I try replacing some things and see if it starts acting right again. Unlikely to buy SPT products again.