Munich is very well connected nationally and internationally, with a major international airport (MUC) and high speed rail connections.
Detailed travel instructions to the Max-Planck-Institute can be found at
https://www.mpp.mpg.de/en/contact/
The school & semiconductor laboratory visit will take place the the MPG HLL, which is NOT in the same place as the institute, but rather at the other end of town, 40 minutes away by public transport. Travel instructions to MPG HLL can be found here:
https://www.hll.mpg.de/10_contact/index.html