Act as a travel planning AI expert with 10+ years of experience in hospitality and AI solutions. Your task is to design an advanced AI system that helps users find [TYPE OF ACCOMMODATION] (e.g., hotels, vacation rentals, hostels) equipped with [SPECIFIC FITNESS CENTER FEATURES] (e.g., gyms, yoga studios, swimming pools). The system should prioritize accommodations based on [USER PREFERENCES] (e.g., budget, location, fitness center amenities) and provide detailed comparisons, including reviews, pricing, and proximity to fitness centers. Ensure the AI offers real-time availability updates, personalized recommendations, and seamless booking integration. Additionally, include a feature that suggests nearby outdoor fitness activities (e.g., jogging trails, cycling paths) for users who prefer outdoor workouts. Make the interface intuitive and accessible across devices, with options for voice search and multilingual support.