Ok, this is going to be an odd discovery/recommendation, but
Terrace House: The Aloha State on Netflix is incredibly addicting. It's basically Japan's version of
The Real World, if the people on
The Real World acted like normal, civilized human beings in an actual real world. It is pretty much the antithesis of American reality television, as there is no outrageous/manufactured/producer-manipulated high-drama, no throwing punches (or objects), no table-flipping, and I don't think I even remember any swearing either (as of episode 25). Yet, despite the slow burn, I'm hooked.
The setup is pretty simple: 3 boys and 3 girls of various ages all live under the same roof but go on to live their normal lives (they're not isolated from society at all). There are no challenges, no voting, no confessionals, etc... They can leave the show/house at any time, and when they do, someone else moves in to replace them. The show also starts airing in Japan not too long after they are in the house, so there are times when new houseguests come in having seen part of what has already happened.
The Aloha State (set in Hawaii) has 36 episodes, with each episode covering a week. There are previous seasons/series, as well as a new one, which I haven't seen yet (the first one, Boys x Girls Next Door, lasted 98 weeks and one of the houseguests stayed the entire time

).