Jay Ben - it is refreshing to see someone else who is interested in investing in NYC.

We must have been writing at the same time, I could have saved some time if I'd refreshed the page lol. 

Nice, it's so refreshing when due diligence finds a big positive.

The units are in tough shape and we'd like to finance additional money for reno & an ADU addition- I assume that we could refresh the interior and convert the attached garage space (200sqft) into a 350-400sqft rent-controlled ADU.

There would also likely be some refresh costs to be ready to rent again (new paint / small fixes, etc).  

I've tried re-syncing them, refreshing the page, and adjusting the availability window.

is a panama-flagged (Japanese owned, and operated by Evergreen Marine, a Taiwanese company) behemoth, over 1,312 feet long (as long as the Empire State Building is high), 193 feet wide, and weighing over 224,000 tons!

Then once the tenant moves out you will have the cost of refreshing the unit/unexpected repairs and loss of rent.

To increase that chance I may spend another $20-30k on top of the $50k to put into the property to minimize maintenance in the long run, perhaps upgrade to a new gas heating system, new roofing, maybe some new plumbing to pex lines, refresh the apartments by painting and new flooring.

minimal repairs15k DIY maybe, paint, refresh the bathroom, comes with washer dryer, fridge and stovetop.