Both series are about a group of people living under the same roof. SNWI is more like a life in a foreign student dorm though, so more people were involved. Both are fun to watch, and if you like rom-com then these two series could be your company on Friday night.
The plot is totally different but both of the male leads became a partner of a shaman. A lot of comedy scenes when they're doing their "mission". Overall, both are fun to watch.