Concierge.com's insider take:
A neoclassical mansion dating from 1924, when this northern district was the country escape for rich Athenians, the Pentelikon still radiates quiet glamour. The hotel has undergone steady renovations for much of the past two years, but the 101 rooms are still utterly traditional in style, with swagged drapery, dark wood armoires, and leather wingback chairs. It nevertheless sidesteps McGrandhotel decorating pitfalls with clever lighting and user-friendly room layouts; fourth-floor rooms are the most desirable for their chalet-style sloping ceilings and sweeping views over the city. Possessing a near-bucolic pool surrounded by emerald lawns, as well as a gym, a sauna, and an uncannily friendly and helpful staff, it's a sweet retreat from the smoggy bustle below. The two dining options include the perpetually Michelin-starred French-Med restaurant, Vardis.