Mess Kalteng in Jakarta managed by the Central Kalimantan provincial government is one of the sectors contributing to regional income through the regional asset utilization sector. To increase income from Mess Kalteng in Jakarta, the management needs to pay attention to and optimize marketing mix factors so that users are satisfied. The purpose of this study was to determine the effect of marketing mix elements on user satisfaction and loyalty of Mess Isen Mulang Central Kalimantan in Jakarta. This study uses a quantitative survey research methodology. The sampling strategy used a questionnaire sent via Google Form, using the Purposive Sampling method which was carried out based on certain criteria. The data analysis tool used Partial Least Squares 3.0 (PLS). The research findings show that price has a significant effect on price, and both product and place have a substantial effect on user satisfaction. However, promotion does not have a significant effect on user satisfaction at Mess Kalimantan Tengah in Jakarta.