I think you are looking at the wrong places, insulating the floor wouldn't change much. 

In the end, it would have made more sense to hire a couple handymen for a week or two than me spending 3 weeks installing flooring, base and case.

Some of the best deals are in dysfunctional floor plans.

Quote from @Ricardo Polanco: Good evening everyone, I am evaluating the possibility of buying a multifamily property in Scranton, at this moment it has 2 apartments that only need cosmetic repairs and it has a big 2nd floor unit that needs a full repair.

., paint, flooring, or perhaps a kitchen or bathroom remodel), buying it at a decent discount, and putting down at least 25%.

That led to uncovering significant water damage throughout the first-floor unit's bathroom, forcing an immediate renovation.

In fact I had one done that size over the summer from some real slobs who moved out, and it required an inordinate amount of deep cleaning including almost one full day just on the filth of the kitchen floors, and it was $400. 

Property TypeUnderstand the different types of multifamily properties:High-Rise: 9+ floors with an elevator, often urban.Mid-Rise: Smaller than high-rise, usually with elevators.Garden-Style: Low-rise apartments in suburban or rural settings.Walk-Up: 4–6 stories without elevators.Manufactured Housing Communities: Mobile home parks where land is leased to homeowners.Special-Purpose Housing:Student Housing: Designed for college students.Senior Housing: Dedicated to older adults.Subsidized Housing: Affordable housing supported by rent and income restrictions.3.

Right now we are just finishing out this year before we really put the gas pedal to the floor. 

That sounds like massive renos (ie new floors, painting...).Yes as you acquire more properties, the chances of having multiple vacancies (no matter how leases are staggered) increases.