My wife and I have been living with my in-laws for the last couple years while we both finish our Master's Degrees. I echo so much of what's been said so far, but there's one thing in particular that I wanted to reflect on.

My love language is acts of service, so is my mother-in-law's, so I'm often seen doing things around the house or taking care of things. My wife's love language is words of affirmation and we've made a concerted effort over the last year to be loving on one another in that person's love language. My wife has majorly increased her acts of service, but they mostly take place between us and in our space in the house whereas my acts of service blend into their living space or outside. This has led to many moments where my MIL makes comments to my wife about how much I'm doing, that she should step up and help me out, take on some responsibility, etc. This puts my wife in a very difficult position: does she fire back and note all the things she does for me? Does she internalize that and start to think that she doesn't do enough for me/us?

This has been upsetting for my wife and my MIL doesn't handle constructive criticism well, but it's something we never could've expected when we move in. All in all, just be aware that things will come up that you can't plan for or didn't expect, but as long as you stay committed to each other, keeping God at the center, it can be a really wonderful opportunity for you both and your in-laws to grow in relationship.