Some great advice here, OP. I live alone and my place is small so I rarely entertain, I usually go out. Two times a year, I do serious cleaning. That means I brush away cobwebs, wash the woodwork, window sills, wipe away fingerprints and smudges, etc. Serious thorough vacuuming, dusting, washing windows, glass tops etc. De-cluttering is essential. That's step one. Look at each room and figure out how to streamline and simplify.
Go into cupboards, closets, and dresser drawers. Throw out canned goods that expired two years ago. Get rid of the toiletries you've had for years and never or rarely used. Empty out the refrigerator and wash it down, removing the drawers to get all the grime out. If it's against the wall, move it to clean in back and under with a vacuum. Set up a big bag to throw away, shred personal papers, another bag to give away, and the rest you'll keep. This is the Big Cleaning I do once a year. The first time is always the hardest. But if you keep up with it it gets easier. My second cleaning of the year is much easier. Once you 've re arranged your closets, cupboards, given away clothes, "stuff," and furniture, you can finish cleaning. Vacuum, dust, wash clothes, fold laundry and put things away.
Now. Here's the trick. Make sure you clean your kitchen every day. No dirty dishes & pots in the sink. Don't leave food out. Second, pick up after yourself, don't leave clothes, mail, and "stuff" scattered around. Third, clean the bathroom once a week, and wipe it down with Clorox wipes every day. It's so easy. You toss some liquid cleaner in the toilet bowl, you wipe down the toilet seat and the sink and counter top with the Wipes, and it takes about five minutes. Finally, your bedroom. Make your bed. It makes the whole room look orderly. Pick up your clothes. That's it. Make sure the kitchen, bathroom and your bedroom are picked up and neat. Same with the living room or which ever room where you spend most of your down time.