Pros (+) Friendly staff. They catered to our every need. Greeks have a true sense of hospitality. Even though it's an older building, they have kept up with improvements. Modern shower, a/c, tv, breakfast for 6 euros.
Cons (-) Piereus is a working class, gritty port town. Don't expect the neighborhood to wow you. Nonetheless transport and uber actually work! Get out and see Athens, or take a ferry to the islands.