If you find a hole in foundation plug up with steel wool and the spray foam stuff. 

Driving pilings, sea wall retention systems, special sewer containment systems, home security, building quality, stainless steel fixtures for salt, etc.  

Stay away from cheap steel doors, they ding up and look like crap after a few years.

I look back at that time and wonder how I had balls of steel, but realized I didn't have all this information we do now with the media pounding away.

Granite countertops and new stainless steel appliance.

Was wondering if it worth it to go with fiberglass doors to prevent rust on steel doors?

In terms of mitigating your risk - particularly if you buy a condo - consider a newer building, steel or masonry construction, a unit on Floor 3 or above where Flood insurance wouldn't be necessary, larger buildings where costs are spread amongst more owners, and buildings with a financially healthy HOA (track record of good management, reserves in the budget to cover large capital expenditures, etc).

The renovations included new flooring, fresh paint, a new HVAC system, updated bathrooms, and the addition of stainless steel appliances and granite countertops.

Working on The contractor and The lender slots right now!

I have also heard that its better to have black or white appliances for long term rentals as they don’t show dents as much as stainless steel does, but the stainless-steel look is the look that surrounding rentals are going for.