Hotel Nikko San Francisco is a modern hotel located in the Union Square neighborhood. It features an indoor swimming pool that offers a tranquil escape from the bustling city. The pool area is designed with contemporary elegance and offers comfortable seating for guests to unwind. The hotel also offers a fitness center, a spa, and multiple dining options. With its sleek design and convenient location, Hotel Nikko San Francisco is a great choice for travelers looking for a hotel with a swimming pool.