It would cash flow nicely.One item to plan for from the beginning is the exit. 

It’s ran like a business, not a personal investment.Given the heavy workload I have being the CEO/founder of the wealth management company, my wife has set up a well oiled machine on the property management side, due to her perfectionist drive however, it still means that she's constantly dealing with tenants and toilets and replying to items at all hours of the day and night.

An example of a mistake was a line item for alimony that I found on my taxes (I am single and have never been married).

When an owner replaces or retires certain items (e.g., lighting, HVAC, or carpeting), they can claim a deduction for the remaining undepreciated value of those items.

Basically almost all the items you mentioned when traveling can be written off to a certain extent.

You need a skillset that you can manage tenant's expectations and enforce the lease with a professional but firm manner.

With this route you can purchase a turn key property and expect to lease the property immediately or purchase an existing rental from an investor that doesn't require rehab and has strong numbers. 

You also need a leasing agent, unless you are going to advertise and screen tenants yourself.

Research market rents, carefully calculate expenses, and ensure you have a solid lease agreement.

That said, I do this with a a few investors on rentals since I'm a Realtor and Property Manager where I am boots on the ground for purchase, rehab and lease-up, however we had a strong professional experience/life together before partnering.Lending will also be a consideration as most lenders are hesitant to lend to non-citizens given the foreclosure challenges it can pose.