Overall, the place itself was very clean, with nice accommodations. Location was ideal for my needs, too. Sadly, there were major problems with the check in.
When I arrived, there were two other parties attempting to check in. The only way to check in was via a machine, and it was frozen. One of us called the provided contact #, and was hung up on. I reached out to AirBnB, and they provided me an alternate number. I too was hung up on; in fact, they were in a different country (cost me extra), and had no way of getting us to somebody that could help. While we were struggling with entry (there were 6 of us), cold, tired, and hungry, another man walked through the lobby and said "ooooh, you're having problems with the check in? Yeah, it took us over an hour yesterday".
Clearly, this method doesn't work. I would hope Eric Vökel (it's a company, not a person, BTW) fixes their system. I would ensure that you have access to a real human on arrival before booking