I travel quite a bit and as a result rent often. Since I always rent National and in the Emerald Club, I choose my car. I actually picked one of these as a rental once since I hadn't had one before (I always try to choose something different each time).
This car is NOT that bad. For the price, and what it is, it actually has a decent ride, drives pretty nice, and is fairly quiet inside. It has an all hard plastic but well designed interior with some nice features (decent gauge cluster, touchscreen radio) comfortable seats and some decent room upfront. Backseat room is tight and best for kids, cargo area is non existent but with the seats folded down you can fit some large cargo in the back rather easily. It's not going to win any races but can easily keep up with traffic with the A/C on.
This is a car that starts at $12k, and is designed to be parallel parked on the street in tight quarters. Scion IQ and Smart car are it's only competitors that I can think of in the US.
Does it drive as well, have as much power or as comfortable as my E350 or ATS? Of course not. Does that mean it's miserable? No. It's a car that serves a different purpose. If I lived in a tightly compacted urban area with street parking and mainly drove around the city, I would strongly consider one.