That being said the condo has been sitting vacant and draining my bank account.  

@Jess WhiteI’m Not sure why someone would drain their 401k (with all the associates penalties), instead of just borrowing against it.

While my wife was there today she collected all the rents (our tenants prefer to put their checks in a lock box in the laundry room) and she drained out 2 pounds of quarters!

If it doesn't happen at least you gained experience and hand the money pit back without draining your time and capital resources.If a seller sells you  a bill of goods with a PG then they will stick it to you.

I would still only install one if the costs of extra vacancy/decreased rent is greater than the cost of the dishwasher and maintenence.Also, make sure you or the plumber incorporate the drain from the dishwasher into the sink traps correctly. 

[sink had 3 lbs. of pasta in the pipes due tenant throwing it down the drain.]"

I know people who have done this only to find that the pissed-off homeowners (at the bank) last horrah was to destroy the house including pouring cement down drains, stealing stives, cutting up the trusses/joists with a power saw, stealing the copper from the electrical, dumping horse crap in the house, etc.

A french drain may be needed, but do the other things first and see what happens.

What this means is the basement floor is lower than the City sewer main, so cannot drain by gravity.

@Jay Hinrichs I got you, I agree with you - C class for a lot of investors could be cash flow draining, my 11 unit C class purchase was very rough in Michigan.