Is keeping my rental worth it?

I have been renting my house for 2 years since i moved out of it. It is in Galveston texas which is a saturated STR market, so it is a long term rental. Renters are currently moving out. I have been renting it for $200 more than my mortgage costs me. But rent seems to be trending down and I will probably have to rent at cost. It has good windows, doors, roof, new appliances, so i dont anticipate any big expenses. Mortgage is 3.4%. Does it make sense to sell? Or hang onto it?