Maybe concrete single-family 1-4 units depending on the price point and cash flow.Also there is no real MLS in Puerto Rico you need to find an agent for each area you want to look at.

As a long-term hold investor, I see this property as -$600/mo to -$800/mo depending on whether you use a PM or not.

Just depends on the situation/scenario.

Rates and expectations vary depending on the relationship and the investor's comfort with risk.

It all depends on what your requirement for cash flow is.

It really depends on where and what you are looking to do.

With $50K and a DSCR loan, your budget will likely cap at properties in the $150K-$170K range, depending on the closing costs and any repairs needed.

Section-8 rentals are great because of that dependable income.

If its single family I wouldnt bother with a manager but 2 or 3+ tenants in same building I would consider it depending on how hands off you want to be on the tenant issues and how handy you are

Suggesting to them buying their house for a wholesale range offer or lower dependent on the extent of the rehab, then having a contract in place that gives them a percentage of the profit to help get them back on their feet, paying off debts etc.