Lodging
There are various possibilities for accommodation, either in Orsay or in Paris (40-60 min commute by RER-B, depending where in Paris). In any case we recommend you to choose a location not too far from the RER-B line, so the daily commute will not cost you too much time - see Reaching the Institut Pascal. Institut Pascal has preferential rates at two hotels nearby. You can obtain these rates by contacting the hotels directly by email (see their websites - link below) and mentioning that you are attending the Interstellar Institute program held at Institut Pascal.
Unfortunately our current budget does not allow us to reimburse lodging this year.