First thing - do not expect high budget, there is not, but story is fun and much better than I expected. I decided to watch this because it is short (and short episodes and I needed something meantime other show release) and because Lee Jong Won is in it and I liked him in Brewing Love, althougth I liked Kim Bo Ra's acting the most. Plot probably is not something unexpected - especially if you are into ghost dramas but I liked it and wished it was full length drama, maybe not 16 episodes but still.
Big advantage - you can watch it on youtube with english subtitles (althougth they do not work perfectly during episode 3 - or maybe it was just my internet).
Also it is clear that there supposed to be more, they probably planned season 2, I do not think it will ever happen.. Still something fun to watch.