Karlín gives you much more insight into Prague life than the historical centre. The building is cool, with inner balconies, with a certain touch of nostalgia.
Very well connected to public transports and full of restaurants and cafés around, notably Eska.
The apartment is esthetic, well designed and practical. To be noted that there is one fully fledged bedroom, one fully separated sleeping upper platform and one sleeping upper platform communicating with the living room.
Communication, check-in and check-out were very pleasant.
Highly recommended!