Rental investment is probably the less risky and easy type individuals could save and gain their capital. Process is simple and profitable. Just need to purchase a property, refurbish if necessary and rent It for profit.
However there are many other variables the could affect your initial investment and give you larger possible return.
By purchasing a property need to consider all the possibilities and decide what is the best situation that fulfill your goals.
For example the cheaper you buy your investment, the less money you add to fix It up and make It great for customers, the sooner you will get your return and your rental property would pay off.
Just like all kind of business the more value you add to your product, the more customer satisfaction you would get. And the more happy customers would be willing to pay you in a rent.