The bathrooms were a bit old-fashioned, but everything was super-clean and perfectly functional. Also, the room I booked online, although larger, had no view. But they hotel suggested we look at what was vacant with a view of the Parthenon and take our pick, which turned out splendidly.
The most striking thing about this superb hotel is the graciousness of its staff who were supremely helpful with multiple details during our stay. The room itself was beautifully appointed and extremely comfortable. The whole experience was made magical by the two balconies overlooking Syntagma Square from which we could watch the changing of the guard at the tomb of the unknown soldier and the Parthenon, which is gloriously illuminated at night. Granted we were there off season, but the price (about 350 euros/night) was astoundingly good for this level of luxury and service. Also, breakfast (included in the price) on the rooftop terrace offered a wide range of very high quality European and even American offerings breakfast foods as well as the superb local Greek foods. Guests at the King George had access to the facilities at the Grand Bretagne next door, a classical grand hotel, but frankly we found the bar, restaurant, and lobby of the King George quieter and more appealing.