This isn't a name or a large hotel but it's my new favorite!
I spent two nights here and I'm beyond pleased. It is close to the major attractions. I walked from here to Syntagma, Monastiraki, and the Acropolis.
I booked a junior suite which featured a two person jacuzzi. The room was spacious, the bed comfortable and included breakfast which was limited but very good.
The staff is very friendly and attentive. For non Greeks they also speak English.
The rates are competitive and I think it's a great value.