The workshop will take place at the Felipe Villanueva building (Sala 1 and Sala 2) of the Faculty of Mathematics. This is located at the San Joaquin Campus of the Pontificia Universidad Católica de Chile. It can be easily reached by subway (Line 5, Subway Station San Joaquin). It takes about 5 - 10 min walk to get from the subway station to the building.
We strongly suggest staying somewhere close to Line 1, between Stations Manuel Montt and Escuela Militar.
A care-free option with a good quality/price ratio is the Ibis Hotel Providencia.
A list of other alternatives can be found here.
The easiest option to get from the airport to your hotel/apartment is to take a taxi. After picking up your luggage and leaving customs, you'll find a counter with the name "Taxi Official" where you can order a taxi. The fare should be around 25.000-30.000 pesos (~30USD) and outside of rush hour the travelling time should be about ~20-30 min to the city center or Providencia. Shared airport shuttles also cost roughly 10.000 pesos (~15 USD).