Modelling the indoor climate of a semi-external, transitory space can be a rather demanding task especially when fully glazed. Parameters such as natural ventilation, temperature stratification, exposure to solar radiation and duration of occupancy are essential when assessing performance. Dynamic Thermal Modelling tools with advanced radiation and convection models were used to capture the complex physical phenomena and provide solid assessments that  lead to facades with good performance. Adaptive thermal comfort models were used to meet our performance goals.