I used Holton-Wise a few years ago. They did a decent job, but were expensive. They charged 10% of monthly rents, $295 for lease renewals, and a full months rent to place a tenant. Those are relatively standard fees in Cleveland. However, they also had high reserve fund requirements. Since I left, I've also heard that they added a $295 one-time account set up fee and a $295 annual accounting fee. Those are not common.
The worst part is that they refused to bill tenants for water and sewer bills. In Cleveland those bills are ultimately the owner's responsibility, but that doesn't mean that a PM can't pay the bills upfront than bill the tenant to reimburse the owner. My current PM and many other PMs that I interviewed do for a charge of $5-$10 per bill. In multi-family properties, PMs often charge a set amount per occupant for water and sewer per month when there aren't separate meters for each unit. Not billing tenants for water and sewer reduces net rental income, especially if you are unlucky and get tenants that use an excessive amount of water.