We stayed in the apartment in October of 2018. It is spacious and has a lot of character. It was walkable from everything we needed except the zoo— 5 min from main train station ,2 min from metro and team and about 10-15 min from tourist attractions . While the neighborhood at first seemed a little transitional , we experienced no problems and felt very safe with the security features of the apartment .
There is no central air ( which I’m sure is fairly common in Prague ) but fans were provided and worked well to get the air moving . There is some street noise at night that can be fairly loud ( mainly from vehicles) so that may be a consideration for light sleepers .