"Rental Beige" will really pop if you have white trim / electrical plates but I suspect you have wood trim if built in the early 90's.

In Houston the "slums" are seeing active construction and increasing government presence (beautification agendas, active city notices to clean up, etc.) as there is a mass movement for "urban living" within these areas 15 min or less to downtown/medical center.

Smell of gas or something electrical that could be a fire hazard.

Also, do you use your management company for every aspect, including booking the rentals, or are you using sites like VRBO and homeaway to book and just using the management companies for cleaning/maintenance?

The selling is going to get a check for the full amount either way (This is a clean sale not a REO or foreclosure).

I would get out of house clean with the bank.  

I like removing that problem, even if it costs more, because everything is clean without concerns and potential future problems that can pop up with little warning.

I have been converting my units to electric baseboard heat.

However, in a big snow I anticipate needing someone to clear the sidewalk and do some alley clean-ups since the City can ticket the Owner the sidewalks are not shoveled. 

But good luck getting even "clean" renters to submit to that.