IMO, you *do* have a profit since the time it was put in service as a rental property, so you need to be concerned with a 1031 exchange rules if you go down that route.
I'm going to go a little against the tide here and suggest that as long as you can swing the cash flow, you have a substantially profitable property here. You also have a second job as a landlord and property manager, but your expenses are taxes, repairs, and the interest portion of the mortgage, and the rent is handily covering those. The principal payment is not an expense, but rather is forced investing. The (non-cash) depreciation should help ease the income side of things.
With "great tenants", I'd keep the house, against as long as you can stand the negative cashflow. If your cashflow is negative by $200 per month, but you're paying off $1500-1750 of principal each month (depending on which number of yours I use) and getting about $16K in depreciation expenses, you're showing a cash loss of $2400/year, a tax profit of around $8K per year while getting around $20K of principal paid off, while having maybe $150K in equity tied up. That's far from a massive losing situation.
I'm not sure I'd rush into buying into that situation, but given that you're already here, already have a good tenant in place, can swing a couple hundred a month in negative cashflow, and quite obviously don't want to sell, I think you're fine to keep it.