The location and the apartment is absolutely recommended, exactly what we've expected (even a little more, as it wasn't obvious from the photos, that the bedroom was separate from the living room - we assumed it's just an attic with a large single room).
Automatized checkin-checkout worked fine. We've experienced noises from the neighborhood coming through the very thin ceiling (children running, some loud talking several times between 10PM-midnight), you can also hear when others arrive in the apartment next door - but that didn't even wake up our 5-year-old.
Based on other reviews (and the welcome message) we were prepared not to have two-way communication with the host. However we also wanted to have an airport taxi organized as offered in the welcome message - there was no response to that either (and the taxi wasn't there), so we just walked down to the nearby taxi station. We've had no problem with that, think of it as an entirely automatized stay without a host.