The other couple of banks that I considered going with were First National, Elevations Credit Union, Key Bank. 

Not much you can do for the water infiltration/sewer back up issue; I would say it happens every 8-10 yrs in Euclid (Euclid is close to Lake Erie where all higher elevation suburbs' storm run-off have to go thru city's sewer system; if your property is north of I-90 then you are at risk).

Like @Jd Martin had mentioned from what you're describing you have what they call a sewage ejection pump installed due to elevation differences from the lower bathroom area.

I've looked at quite a few MFs lately that are doing much worse than 50% expense ratios due to elevated vacancies, distressed units needing rehab that the owner can't afford, and very high turnover-related expenses.These situations call for apartment turnaround specialists, which I don't claim to be, but clearly units can be bought for $7-12K each all over fly-over country and someone who knows what they're doing can do very very well against a backdrop of rapidly rising numbers of renters in years ahead, due to tightening lending standards and so many more people with blighted credit.

Higher speeds, elevation changes, multiple ways to crash and hurt or kill yourself. 

They did elevate the field, but I'm not sure if it just wasn't high enough, or the lack of a curtain drain is the issue. 

Now we are talking about 5-6 story construction with elevators, maybe a podium slab and usually structured parking.  

Think in terms of the life of elevators, 200 car parking lots, runoff catchment ponds etc....

(A) A landlord who is a party to a rental agreement shall do all of the following:(1) Comply with the requirements of all applicable building, housing, health, and safety codes that materially affect health and safety;(2) Make all repairs and do whatever is reasonably necessary to put and keep the premises in a fit and habitable condition;(3) Keep all common areas of the premises in a safe and sanitary condition;(4) Maintain in good and safe working order and condition all electrical, plumbing, sanitary, heating, ventilating, and air conditioning fixtures and appliances, and elevators, supplied or required to be supplied by the landlord;(5) When the landlord is a party to any rental agreements that cover four or more dwelling units in the same structure, provide and maintain appropriate receptacles for the removal of ashes, garbage, rubbish, and other waste incidental to the occupancy of a dwelling unit, and arrange for their removal;(6) Supply running water, reasonable amounts of hot water, and reasonable heat at all times, except where the building that includes the dwelling unit is not required by law to be equipped for that purpose, or the dwelling unit is so constructed that heat or hot water is generated by an installation within the exclusive control of the tenant and supplied by a direct public utility connection;(7) Not abuse the right of access conferred by division (B) of section 5321.05 of the Revised Code;(8) Except in the case of emergency or if it is impracticable to do so, give the tenant reasonable notice of the landlord's intent to enter and enter only at reasonable times.

My favorite flat of the three is a fourth-story walk-up, meaning that it takes four flights of stairs to access with no current plans for an elevator.