Boutique Hotel Sector Outlook Market Size & Forecasts 2026-2035, By Segments (Service Offered, Target Customer Base, Hotel Amenities, Type of Boutique Hotel), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Marriott International, Hilton Worldwide, InterContinental Hotels Group, Accor, Hyatt Hotels Corporation)