Free shuttle bus between Meguro station to the hotel or Shinagawa station to the hotel.
Hotel Gajoen Tokyo, a luxury Japanese-style hotel, was the first wedding hall built in Japan, and is also known as the "Showa Era Palace of the Dragon King" thanks to the thousands of beautiful artworks and grand decor which seem to cover every surface. If it is open for public viewings during your visit, make sure to check out the Hyakudan Kaidan, an ornate stairwell decorated with bright paintings and intricate carvings that connects several lavish rooms. Information is available on the hotel's website.
You don't have to be planning a wedding to visit the main halls, gardens and restaurants of this luxurious hotel, so feel free to explore.