Location selection is one of the basic activities that require a thorough decision-making procedure for construction, expansion, or relocation of a specific project such as hospital, school, industrial zone, building, landfill, and residential sub-division. The main objective of this study is to select suitable sites for a small conference center with motel-style rooms in Thanh Hoa city. We applied GIS-based Multi-Criteria Decision Analysis (MCDA) and developed three models comprising the restriction model, the suitability model, and the integrated suitable locations model to observe the optimal location for a small conference center. Besides, the decision was based on the MCDA, Boolean/ fuzzy overlay, and Weighted Linear Combinations (WLC). The integrated model showed the final suitable location for the construction of a small conference center with motel-style rooms indicated that 45 %, 14.6 %, 22.4 %, 17.5 %, and 0.5 % of the areas were unsuitable, least suitable, suitable, moderately suitable, and highly suitable respectively.