When they move out, I can access their account to charge for cleaning and repairs.

Since you are not doing super high end finishes as mentioned, doing high end flooring and all other stuff just above builder grade does not warrant tile or full wood flooring. 

The property has two residential units on the second floor and first floor is a retail space.

Fix your cabinet with the missing door, remove the stickers from the mirror and window, close the toilet lid, sweep and mop the floors, use a wide-angle lens, and take pictures from an appropriate angle. 

If the unit is empty, change the locks, clean it, and get it rented.

For rentals, would a single floor or two floors makes sense? 

Second rental property as a duplex.Converted SFR, first floor 4br and 1 bath ($665/month).

The law allows you to charge for ALL cleaning, including trash removal.

Which results in more wear and tear and cleaning. 

Gutted the floors myself and installed new subfloor and new flooring on entire first floor.