We enjoyed this apt. It was clean and they even left a bottle of champagne for us for NYE. We liked that on NYE we could open our window and overlook the city fireworks.
The only issue we ran into was at check-in. We were driving from Germany and I hadn't heard anything from Josef so I asked about check in. He responded that we could check in at reception. By the time we arrived at night though (8pm or 9pm), reception was closed and no one was around. We asked the security guard in the parking structure for help but he didn't speak English. I spoke to him in Polish and he let me know he only speaks Russian. We finally were able to understand each other a little and he showed me an envelope he had from reception with our key and showed us to our room. I just wish that instructions were sent that if we were arriving late that we should ask security because at one point we were worried we would have to find another place to stay that night.