I'd make $300 a month from the rental, and it is brand new with a 1 year warranty, so maintenance costs would be delayed for a bit.Thanks for advice!

Current renters pay on time and are low maintenance. 

I guess that is why your vacancy and maintenance are so high.If you feel adventurous, there are many options for you in the US for better returns.Best.

.- Listing agent for some ungodly reason allows the sellers to be present for the appraisal, and the listing agent ignored my friendly email saying to direct the appraiser to the buyer's agent should the appraiser contact you, and then the sellers say something stupid in the presence of the appraiser about $50k of deferred foundation maintenance.

Since a lot of operating expenses are variable. maintenance,capex, etc.I would like to hear as a percentage of gross rents.How much the main fixed operating expenses are.

When evaluating properties be sure to make sure they include the basics like: Real Estate Taxes Insurance Gas & Electric Water & Sewage Repairs & Maintenance Unit Turnover Contract Services General & Administrative Payroll & Benefits Marketing & Promotion Legal & Accounting Landscape & Snow Removal Trash Removal Management Fee Reserves for ReplacementsThese items at the very least should be included in any competent underwriting of a property, be it by a broker or the owner directly.  

The owner is a 75 year old investor with deferred maintenance.

Investing in physical real estate requires a large time commitment, as well as stores of revenue for employing building maintenance professionals and making required repairs or installations as needed.

If you wish to also create, assign and track maintenance requests try buildium.com about $40 month up to 40 properties. 

@Joe Henry Don't forget your capital expenses (calculated as a percent like vacancy, maintenance, management)