Heartpia Atami
Chubu, Shizuoka · Year-round
Atami hotel with published pet-friendly plans and onsen baths for owners—confirm pet room inventory on official Heartpia site.
Indoor option
Indoor / all-weather facilities noted for this stay.
Year-round oriented
Facilities aimed at year-round use (confirm maintenance closures).
Outdoor spaces
Outdoor areas listed — check season and weather.