This apartment flat is in an excellent location. Steps to the metro and all the sights. There's also an excellent grocery store directly across the street. The company hosting us was responsive to all our questions and were accommodating to our early check-in after an overnight flight.
There are some downsides however. We're a family of four with two kids. The house wasn't especially livable for a family. The apartment definitely felt like a company property and not someone's home with all the thoughtful touches that come with it. (For instance, not enough dishes or we did laundry while we were there and there was no drying rack. We had several examples where important details were missing.) As mentioned in other reviews, the wifi is terrible. The one night we wanted to watch TV there wasn't cable and because wifi was terrible we couldn't stream anything either. The beds weren't very comfortable either. This is an "Airbnb Plus" property but it wasn't nearly as nice as other non-plus flats we've stayed in European city. The beds weren't as comfortable as claimed, nor the soaps, which their SweetInn site makes a big deal about.
All this said, it's a great location, clean, with good people supporting it. If you want a great location and plan to be out exploring the sights 100% of the time this is a good home base. However if you want to settle in and live in the neighborhood, I'd look harder for another place that's better suited.