@Anonymous That's one of the things that I advise new hosts- don't try to attract everyone to your listing- think about your target demographic and market towards them and furnish accordingly. There will be some crossover of the types of guests one gets, but I think a host can get more guests who are a "fit" and come up with less complaints if they keep that in mind.
If a host has a family friendly listing, though, they should provide some things to entertain kids, just as they would provide high speed, unlimited internet if they cater to digital nomads.
I wouldn't provide toys with small pieces that could be choking hazards, unless the host is really into customizing the experience and has a selection of age-appropriate toys and games they would put in the unit according to the ages of the child guests.
And of course one can't have a box of grubby toys- they have to be cleaned just like everything else.
I'm a minimalist in my own life, so my Airbnb room is also. The only "stuff" in there, aside from the furniture, the hangars, and a throw rug, is a bedside table lamp, a safe candle holder (a small pewter container filled with sand) and candle in case the power goes out, a small basket guests can use to put jewelry, coins, phone chargers, etc, in, and a few travel books on Mexico, maps of the area and some local business cards.
I look at some of these listings full of decorative items, dried flower arrangements, "collections" of whatever, and a dozen kitchen appliances on the counters, etc, and can only think of how much time it takes to clean all that stuff. And that guests don't care about any of it. They more appreciate clear surfaces where they can spread out their own stuff.