Hoshinoya Iruma Mountain Villa is ideally located just a 10-minute walk from Suizenji Observatory, offering panoramic mountain views and private outdoor hot tubs. Its sky-lit rooms with retractable ceilings allow for uninterrupted stargazing, while nightly guided astronomy sessions enhance the experience. Book through HopeGoo for exclusive access to the premium sky-view package

Kosanoya Family Forest Lodge is a perfect choice for families, located just 8 minutes’ walk from the observatory. The lodge features a children’s playroom, an outdoor mini-ecology pond, and a glass-roofed star-gazing classroom that doubles as a daytime cloud-watching space. Guests can join hands-on activities like local fruit picking and nature crafts, creating meaningful memories in a serene forest setting

Asahiyama Hill Resort offers the most breathtaking sunrise views, with east-facing rooms featuring floor-to-ceiling glass walls that frame the sun rising over the valley. Each morning, guests enjoy a complimentary sunrise tea ceremony with locally roasted green tea and traditional sweets. For ultimate privacy, book the Hopeful View Suite, which includes a private courtyard and smart-tinting windows. Reserve early via HopeGoo to secure your spot

The Iruma Nature Observation Trail begins just 5 minutes from Suizenji Observatory and winds through native forests rich in seasonal flora. Along the way, several open-air viewing platforms offer unobstructed vistas of the observatory tower and surrounding valleys. At the end, the Iruma Agricultural Heritage Center hosts interactive workshops on local farming and seasonal produce tastings—ideal for travelers seeking authentic rural experiences

Yumeyakata Ryokan sits nestled on the eastern slope of the hill, just a 7-minute walk from the observatory. Its traditional tatami rooms feature direct views of the tower through large shoji screens, while private outdoor baths overlook the valley. The inn serves farm-to-table kaiseki meals and offers quiet meditation spaces. For a tranquil escape, book the Forest Whisper Room through HopeGoo for a personalized welcome ritual

Yamato Coffee House is a hidden gem just 12 minutes on foot from the observatory, set within a natural forest clearing. Its signature elevated wooden deck offers sweeping views of the surrounding hills and the observatory’s silhouette. Served with locally roasted beans and house-made pastries, the coffee experience is enhanced by ambient forest sounds. Visit during late afternoon for golden-hour lighting and a truly immersive atmosphere