The paper focuses on measuring the price elasticity of selected customer segments of accommodation services in Prague. To measure elasticity, the simple log linear regression analysis method was chosen. Due to the required output, a simple regression analysis was performed. The inputs are considered as sales and the number of beds sold per night. Logarithmic data transformation was performed at all inputs. Outputs are available over the last five years. Measured elasticity can then serve as input for price optimization within revenue management. It is important that price elasticity during the selected years is moreover stable, and can be therefore used for future analysis and primarily for the optimization process.