This study examined the level of digital systems adoption and sustainability practices among accredited hotels in Eastern Visayas. Specifically, it assessed digital systems adoption in terms of guest-facing technologies, operational systems, and technological infrastructure, and evaluated sustainability practices across environmental, economic, and socio-cultural dimensions. It also tested whether a significant relationship exists between digital systems adoption and sustainability practices. A quantitative descriptive–correlational research design was employed. Data were collected from 64 respondents representing accredited hotels in Eastern Visayas through a structured survey questionnaire. Stratified random sampling was used to ensure proportional representation across provinces in the region. Descriptive statistics, including mean and standard deviation, were used to determine the levels of digital systems adoption and sustainability practices, while the Pearson Product–Moment Correlation Coefficient was utilized to examine the relationship between the variables at a 0.05 level of significance. Findings revealed that accredited hotels demonstrate a high level of digital systems adoption, indicating strong integration of technologies in guest services, operational processes, and infrastructure. Similarly, sustainability practices were found to be highly implemented across environmental, economic, and socio-cultural domains. Moreover, results showed a strong and statistically significant positive relationship between digital systems adoption and sustainability practices (r = .849, p < 0.05). The study concludes that increased adoption of digital systems enhances sustainability practices among hotels. Digital technologies facilitate efficient resource management, streamline operations, and improve service delivery, thereby supporting sustainable outcomes. These findings underscore the importance of integrating digital innovation with sustainability strategies to promote long-term competitiveness and responsible tourism development in the hospitality industry.