That's why you mostly see condos that are attached to each other: less surface area to maintain. 

I  have been using $35 per sq ft on rehab costs, however I feel like finishing a basement would cost more (move/add plumbing, egress window, drainage, etc). $35k-$50k?

On the surface, it looks like you paid too much.

The surface of material seems to be good.

There is a ton of pressure on anything under $560k (FHA Territory) and we are starting to see some silly loan products surfacing.

I’ve done some surface level research and know that you can pay third-party services, but wondering if I can outright cancel due to medical reasons for my dad (cancer) who is too weak to travel.

I do have pets the stains are not visible on the surface and the cleaner said they could get any lingering smell out.

I am only scratching the surface here of what you need to consider.What about the 60 unit building mix??

Take a peak at the roof, easy to tell how recently it was done, also gutters/ drainage and if everything is in tact and they have proper drainage on the property, look for wood rot on siding and near windows, take a look at foundation around the house to see any possible cracks, everything on the inside is pretty straight forward, look for cracks in the wall, hairline cracks arent a big deal at all but large cracks can mean foundation/settlement issues.

Pool service is also a must, as letting a tenant service the pool is not recommended.Now, if the pool is seriously in need of repairs or needs a new surface or equipment, maybe filling it in or covering it makes sense.