Full service, luxury resort in the heart of Napa Valley. Boasting 224 rooms and suites, and over 22,000 square feet of flexible event meeting space. Spa Terra is located entirely underground in the 22,000 square foot Estate Cave, Spa Terra at The Meritage Resort is an experience unto itself. The hushed serenity of the cave, with natural stone and copper water features combined with Old World Florentine architecture and furnishings, offers guests an environment unlike any other. Restaurant Siena CUISINE: Cal-Ital (Wine Country). FACTS: 224 Rooms, 13 Meeting Rooms, Meeting & Banquet Maximum 800, 14,000 Sq. Ft. Meeting Space.