The biggest plus about the location of the Titania is its proximity to central Athens. The biggest minus about its location are the sex shops just across the street, and the rougher crowd of Omonia Square. I was warned by several experienced travellers to Greece to be wary in that district.
The public spaces of the Omonia are generally very well decorated. The rooftop Olive Garden restaurant and lounge is a great place to enjoy life.
The breakfast buffet is a typical Continental breakfast. It was good, but not excellent. The room itself is a bit shopworn since it serves both travellers and conference attendees.
There are three tiers, if you will, of rooms: The rooms on the lower floors SERIOUSLY NEED RENEWAL. On our inbound to Greece visit, we stayed on the fourth floor. The carpet in the hallway was OLD. We also had a "courtyard" (interior of the property) view, which was nowhere as nice as the streetside views.
When we stayed on our departure from Greece, we stayed on the eighth floor, and had a streetside view. The difference in the quality of the rooms is the difference between three and four stars for this hotel.
Finally, even if the hotel advertises itself as non-smoking, don't believe it. You could smell smoke on both the fourth and eighth floors, and the "Olive Garden" (yes, that's its name) rooftop restaurant had ashtrays out!More