They have coffee, tea, espresso drinks, pastries, free wi-fi, a piano, and chillness. It's not super huge, but cozy and rarely crowded.
They're open from 8AM to 3PM every day and area nice stop if you're already in the Cleveland Heights area, perhaps checking out the Cleveland Cascade or enjoying Lake Merritt. There's also a laundromat next door and the Leaning Tower of Pizza on the next block, should you need laundry and/or pizza.
Cafe 504 used to be at this location.