Sounds like you don't really have an issue apart from being surprised that the tenants are still there. If the tenants start to complain about the state of the place you can always offer to make improvements in returns for higher rents. ;)
Unless leaving the repairs will cause greater issues down the track or greatly effect a bank valuation I would leave it. I would let the numbers dictate the best move to make.
Things I would consider.
Are the current tenants paying market rent? If not then rectifiy that asap.
What...
