Easily one of my top five favorite bars in Cleveland. The Harbor Inn is a great spot to meet up with groups of friends, as there is plenty of space around the bar and tables that can be rearranged as needed. (they also have a rather big space on the 2nd floor, but I think it's usually open for private parties or for busy holidays). The bar is one of the oldest in Cleveland and it has a lot of character and charm because of it. They have an extensive beer selection and they carry every beer that you can see on display on the wall behind the bar.
Added bonuses: arcade style bowling machine, photo booth and dart boards. They have cool Harbor swag (tshirts, etc) on sale -- always a nice gift for friends and family. The staff is fantastic and always welcoming to regulars in a "Cheers" everybody knows your name style. Huge parties go down on holidays and for various fundraisers. The Halloween party is an outrageous costume party and it's something you have to see to believe. They also have fundraisers; the .5 k race and costume contest around the parking lot behind the bar was a big success and they were able to raise a good amount of money for charity. That was yet again, another must see event. If you like drunk and sober people dressed like idiots and freaks, then be sure to attend at least one of their many zany parties.
Overall, awesome joint to grab some drinks with friends or to witness some wild and memorable parties!