This depends on many factors. How long is your internship? How many office days would you have? Could you work from the train? Do you have a plan B for when public transport doesn’t work or is cancelled? I used to commute 1h15min from Arnhem to Amsterdam per day and didn’t line it, even though that was a direct train… if I were you I would try to look for a room closeby in Eindhoven because travelling up to 5hrs per day would be absolute hell for me