Please be aware that this is a noisy location! The place itself is 5 stars and lovely, but it’s very noisy until quite late. If you’re in Athens to participate in the nightlife, it’s unlikely to bother you. But if you’re looking for some shut-eye, it’s something to consider.
Like I said though, the place itself is great - clean, comfortable, and centrally located. Definitely take advantage of the rooftop terrace whilst you’re visiting.