I really do like this show. It certainly deserves more than a 6 point something rating. I could describe it using the words "fresh" and "original" but probably not "hilarious" or "best".
The characters have been growing on me and I like the way the 3 couple's responses are compared in similar situations at the start and end of each episode - it can be very funny, especially the older pair who's relationship is a little err, tried and tested?
The most similar sort of show I could compare it to would be Dharma and Greg, sort of, but I'm hard pressed to think of another show like it.
If I want light, refreshing entertainment, something easy to watch when I first plonk myself down on the lounge after a hard day's work, then "Better with You" is my choice. I don't need to think too much about it and it helps to put the stress of the day behind me and settle me in for a quiet, relaxing evening.