The conference will be held at Instituto Superior Técnico (IST). The sessions will take place in two separate buildings: Departamento de Matemática (the Mathematics Department building) and Complexo Interdisciplinar. In the diagram below, the former is identified as 24 whilst the latter is designated by 26.
Specifically, we will be in room 3.10 or in the auditorium Abreu Faro. The diagram is meant to remind you that 3.10 is on the third floor of the Departamento de Matemática whereas the auditorium Abreu Faro is placed on the ground floor of Complexo Interdisciplinar (at the entrance, turn right).
Google maps describes the indoor geography of Instituto Superior Técnico automatically. All you need is the app itself.
Click here to provide you the location of Departamento de Matemática, Complexo Interdisciplinar and room 3.10. The auditorium is not recognized by Google Maps, but you will not miss it.