I well keep doing what I did with San Myshuno flats. When switching tenants, there shall be a minimum of items in the flat - kitchen counter with sink, stove, fridge. Bathroom shower, toilet, sink and wall mirror. No beds. Ceiling lamps in all rooms. And of course - "please leave behind the fireplace when you check out". It makes it more fun to move out when you need to tidy up, and more fun to move in when you find a few basic things + often one thing that former renter forgot or left behind as a gift.
I might make exceptions if I have units that are meant for short term rent - like students, retired sims, workers on a project etc. Then I'd provide fully equipped which would include all tables/beds/chairs etc, but no clutter. My rule is then that the tenant is allowed to only change swatches + add stuff that come from their personal inventory. When they move out all stuff that can be placed in their inventory must be cleared from the apt :)
