A purchase price of 218k, and rent at $1345, that means your house is yielding about a 0.615% monthly rent compared to purchase price. Normally for investors, the aim is a minimum of 1% or $2100 or $2200 a month. I understand at the time things were depressed, but what are units comparable to yours renting for in the area? If the average is $1345 for comparable units, well, I think leaving that housing market would be a good idea. But, if you are able to raise rent to match the current market that was around $2100, you're taking in $755 more a month, which annually gives you $9060. You may like the current renter, but are they worth the $9060 not in your pocket?
Think about the cost of your mortgage, insurance, taxes, cost of repairs, vacancies, all those expenses combined with the 0% your property has appreciated in 10 years, and you're only charging 0.615% of the original purchase price for rent. Great job staying afloat during the crisis, something many people cannot say, but you want the investment aspect, which is why you asked your question.
If you sold, you will walk away with 71k, which is nice since the renters have amortized most of your mortgage. But, in your current situation, I think a bit of optimization can be done. Selling or raising the rent are two financially beneficial routes. If you want a hands-off approach to real estate, a REIT is an option. If you want a different property, I would consider looking into finding something below market value and trying to keep in mind the 1% rule (house is 100k, rent is $1000).
I hope my point of view helps, good luck.