LoRa is an emerging wireless standard specifically designed for Low Power Wide Area Networks (LPWANs). It provides long range, low data rate, and energy efficient wireless communication and is believed to have high potential for realization of a large number of Internet of Things (IoT) applications. Various research papers have already reported on the performance analysis of LoRaWAN protocol in terms of radio communication range, and reliability for outdoor environments, while performance analysis for indoor environments have not yet received enough attention. In this paper, we provide an in-depth performance evaluation of LoRa for indoor IoT applications.