The flat is quite central and well-connected to public transportation. My favorite aspect of the location was that one could step within 10 to 15 minutes up to the national memorial at the Vítkov and enjoy the view over Praha from there - especially the sunset is wonderful.
The check-in process worked really good, we were even able to enter the flat at 12am. Interiorwise we were also satisfied, the two bathrooms came really handy to our big group of ten people.
Furthermore, did the communication with the managment work well. They helped us out very fast, when there were any problems.