Poseidon offers basic, clean rooms that are a five-minute walk from the beach and a half-hour walk from the town of Terracina. Rooms are quaint but no-frills, and the hotel’s grounds are pleasant -- a set of two-story buildings laid out around a small, attractive pool and surrounded by views of Mount Circeo. The hotel only serves lunch, so guests should expect to spend their other meals at one of the (mostly seafood) restaurants lining the waterfront. After-hour transportation options are limited, and some guests have commented that taxis don’t circulate late at night. Poseidon is located in a residential area, which is also reputed to be slightly shady after dark.