Apartment was as beautiful as in the pictures, and perhaps even more spacious in real life. Apartment is right by the train tracks, which wasn't an issue for me, but might be for light sleepers. Location-wise, it was on the edge of Karlin, walking distance to the strict city center, a stone's throw from public transportation and Florenc bus station. Very very clean, WiFi was great, had all the amenities promised.
Communication with host was ok, though not really personal, it was enough to get me checked into the apartment. However in the middle of and towards the end of my trip I received a bunch of random, automated, pre-written text that didn't really answer my questions/ didn't fit the timeline. Host was nice enough to accommodate an early check-in for me though.