So we then  painted the whole joint, repaired the rotted fascias, replaced the ancient AC/heater, new pool pump equipment, new concrete driveway to replace the crumbling asphalt, new landscape, updated bathrooms (resurfaced shower, nice, new cabinets/sinks, but off Craigslist), more new flooring extended throughout the entire house... even some upgraded pool furniture and a nice BBQ outdoor kitchen as we were told we are in a high end area that requires these types of amenities. 

They are about 90% occupied.I was considering the following:Replacing all flooring with vinyl plank except for bedroom (add new carpet when needed)Painting all units 2 tone colorsReplace appliances with new appliances that come with 3-5 year warrantyChange p traps and plumbing under sinks (Noticing more leaks and stop ups)Change all filters (should be doing anyway I know) Resurfacing TubsI could increase rents on the property but I would only do so for my problem "late or non paying tenants" so the move would be a value add/bulletproof to reduce maintenance.Anyone have any other strategies or suggestions?

It did end up meeting the reserve and has not resurfaced on their site.  

I was screening a tenant and I couldn't verify previous landlord and the tenant gave me there last bill which had everything they were charge for dented refrigerator, resurface tub and others items along with braking the lease (I was going to approve this person) but I was persistent and finally got in contact with them they just said in writing that they owed money so I denied because of that. 

I wanted to see what the BP community's take was on having the shower resurfaced versus having all the tile ripped out and replaced.

Most of the equity I took out was put back in to rehab the property and redid that backyard/patio deck,refinished the pool, new roof, new driveway, paint, landscaping, resurfaced kitchen cabinets, etc.

Now, if you do a full cosmetic rehab where you are basically resurfacing existing surfaces and painting, your talking in that $15-20 k range depending on sqft.

I was going have the tub resurfaced and walls painted.

They do counter and tub resurfacing but also have a hard enamel or some such finish for cabinets that is really durable.

If they decide they need a new pool, to resurface the parking spaces, someone mishandles the money, there's a rash of foreclosures and people not paying their dues, then the dues can go up significantly.