Neighborhood elements have been considered important for the accommodation industry, which not only affects the demand for accommodation but also affects the experience of consumers. This effect is more pronounced for accommodation-sharing platforms as they try to display the whole surrounding environmental information to attract more consumers. However, current research focuses on the impact of tourist attractions, transportation hubs, and business districts, which has ignored the influences of healthcare-related factors on incidental accommodation demand. This study develops a theoretical framework based on aggregation externalities theory and tests the associate hypotheses with data from a large city to explore how hospital distribution influences the operation of accommodation-sharing platforms. The study indicates that distance to the hospital has positive and significant effects on the distribution of listings, the number of reservations, and consumer satisfaction. Hospital ranking strengthens the effects on distribution and reservations. This paper presents a novel study that brightens the gap between accommodation sharing and healthcare resources, providing recommendations for the operation of shared accommodation platform operators and landlords.