I have made some upgrades since living here, fully renovated the bathroom and laundry room, upgraded appliances, added a tankless hot water heater, and replaced all galv. pipe with pex.

However, as long as your real estate investments are covering debt service at 1.25x or greater, it will wash out the DTI impact in residential lending and blend out in your global cash flow / debt service for any bank  or commercial lender. 

If there’s any time, maybe we think about doing some laundry.

One day it will wash away. 

"Lower quality" I honestly would be investing, but I guess semi-gloss if you were really interesting in putting in the labor to wash the surfaces.

Keep the cute house neat inside and out.Annoy thing: since she moved in, she asked to replace dryer, then dish washer(said after washing will have water spot on dishes), then clogged under kitchen sink after Thanksgiving, add light... finally we had a quite holiday.   

Do you wash the comforter, shower mat, and shower curtain in between guests/tenants?

The issue is, washer and dryer combo (not the stackable, the one where you can wash and dry without taking out) is my only option for now since the unit does not have vent.

Therapy, House cleaner, prepared meal delivery, promotion at work, avoid annoying co-worker by switching to a new team/office, laundry service, move so you have a shorter commute? 

For example, adding a back deck, garden area and dog washing shed in a few of my properties to ensure I attract the best tenants and they appreciate living in my property (and don’t leave).