They're especially great at putting the fear of God into you that if you don't use a "professional" to do the work, oh, water could get into siding, and cause serious damage, and no, no, no, you don't want that...They also offer the outside trim ("zero-maintenance") wrappers for the windows that you would want a bender brake to make.

Also the good thing is that your tenants are month to month and if it don’t work out you can tell them that you will not renew there leases and you can start fresh with your new lease agreements with new tenants.

Get it in writing while it's still fresh in your mind. 

Biggest issue to me would be water intrusion/mildew and the accompanying smell.

The two member condos were just formed to sell two dwellings on one lot and maybe share one water meter.

The people who are born and raised in Denver continue to opine about the affordability, but those who are moving into the city with fresh eyes will gladly take their profit from the coasts and pay all cash, over ask in order to live in (again, my opinion) the best city in the country - diverse economy, great work/life balance, friendly people, city without most of the big city problems, 300 days of sunshine....

Simply bolted onto concrete flooring with no foundation perimeter to address water intrusion issues when it rains.

It seems like it might be best to find that middle 'sweet spot' and go with the median level of finish then in your case (sounds like not wanting to invest a lot to update, and want to keep cash flow at max.)If I were to run comps and see on the high end of area rentals it meant all new countertops, appliances (high end), hard wood/laminate, kitchen cabinets etc and on the low end it meant more of an 'apartment level' finish - I personally would go for the middle road to this and maybe choose to refinish countertops, refinish kitchen cabinets and go strictly mid-range on appliances (I would pick up the extend warranties personally).In hitting the kitchen and baths, getting some fresh paint up and addressing flooring- I would know the heavy 'where the eyes are drawn to' items were checked off my list, take it all for expenses come tax time and be pretty happy to know I was right in the middle zone for the area- I wouldn't have the lowest quality of renter pool in the area, or be worried about overpricing myself out of the competition on the high end in my mind. 

All of them have a lifespan, Roofs, floors, hot water heater, appliances, hvac, bath and kitchen remodel, etc.

Questions:Have your tenants been okay with the staining and slight smells of this water?