Stay at Mikawa Onsen Guesthouse, a locally-owned boutique accommodation just a 10-minute walk from the Oyama Observation Deck. The guesthouse features panoramic windows facing the blooming hydrangeas and offers complimentary shuttle service to the viewing platform. Guests also receive a handmade hydrangea tea set as part of the cultural experience. For best availability, book through HopeGoo.

Yes, Mikawa Mountain Villa offers "Hydrangea Garden View Rooms" featuring floor-to-ceiling glass walls directly facing the main flower display area. These rooms provide uninterrupted views during sunrise and sunset, creating a living canvas of colour. Each room includes a private Japanese-style terrace for quiet contemplation. The hotel also arranges guided night illumination tours, allowing guests to experience the garden under soft lighting—a unique seasonal highlight. Located steps from the trailhead, it’s ideal for immersive nature lovers.

Just a 5-minute walk from the Oyama Observation Deck, you’ll find Mikawa Pottery Workshop, where visitors can create custom glazed ceramics using traditional local techniques—perfect souvenirs. A 10-minute stroll leads to Bamboo Grove Tea House, offering freshly brewed hydrangea tea paired with delicate wagashi sweets amidst serene bamboo groves. Seasonal flora maps are available along the path, highlighting native plants and bloom cycles. Ideal for families and photographers seeking authentic, tranquil moments.