Flew in from Washington, DC and stayed in Athens only 24 hours before going to Santorini and Istanbul. This hotel has a very helpful manager, think his name is Theseos. He sent us to a wonderful restaurant called 21 which turned out to be the best meal we had in Greece. Rooms are average, morning breakfast selection is adequate but lack fresh fruits, and if you walk around the hotel, walk the main boulevards not the small side streets. Use same caution as you would in any major American city and should be fine. TIP: When traveling in Greece, bring your own power adapter for US plugs as they were not easy to come by in the hotels in Athens and Santorini.
Wifi was free and worked well. To see as much as we can and to hedge against the possible strikes (which did not happen when we were there), we hired a private driver and guide from George's famous taxi service (yes that is the name). His son Nicholas met us at the athens airport, we went with him an hour away to Sunion to see the Temple of Poseidon and sights along the way. He then took us to the hotel after the half day trip. The following morning he took us on a half day tour of Athens (Acropolis, Agora, tower of wings, national archeological museum, drive by the parliament, see changing of the guards, went by Olympic stadium, see views from the top of the city, Kapnikarea which is a beautiful Byzantine church and then he took us to the airport. They don't go inside the sights but tells you about what you will see beforehand. You pay your own entrance tickets to the sights. He was a very personable fellow and drove very well. The car was a Mercedes taxi. If you are going to Athens only once in your life, you don't have a lot of time and you don't want to take the chance of public transport strikes, this is a good way to go.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.