We’ve been considering the United States, Europe (Spain, Cyprus, Portugal), or the Caribbean, but we’re not sure how to proceed and would like to avoid any major bureaucratic or administrative difficulties.Do you have any useful advice or specific locations you would recommend?

Rpdata.com.au is probably the best for residential dataAny of the major agencies CBRE/JLL/Knight Frank/Savills/Mirvac will have reportsPlus a lot of the publicly listed REITs will have reports too ie DEXUS/Investa/Lend Lease/Westfield/Stockland/Cromwell etc.

For example, properties became available at the onset of COVID, during a snowstorm, a hurricane, a major holiday, or after some other unexpected event.

The kids were OK but the mother, who was really the payer, was a major hassle.

The fact that your property is in a strong area with high-quality renters and growth potential is a major advantage.First, revisit your numbers to include all expenses and potential tax benefits, like depreciation and mortgage interest deductions.

., late Spring to early Summer 2023, we lost our Chief Financial Officer, another accountant passed away, another had a major heart attack, and our Controller son passed away and we provided an extended leave. 

It also has a good sized tech hub, and major employers like coors, Amazon, Buckley space force base, Lockheed Martin, etc.

The vast majority of lawsuits against Landlords are for wrongful eviction, security deposit disputes, and Fair Housing Violations.

However I've seen 1 bedrooms go for $1800 in the nicer part of the city, so this is for the majority of the C+ / B- apartment houses in the area. 

Also, real builders/experienced developers will often have a true technician, i.e. a civil engineer, architect, real estate attorney et al at least glance at the property info to make sure there are no major red flags.