Must see sight. A very happening plaza. Historic buildings, great shops and places to eat. Quite often as you are visiting Marienplatz there is live music playing. I believe they are locals playing. Makes for a very nice authentic feel. The music they play is great. As we went in the beginning to the middle of April 2018 we beat the large tourist crowds. It is still busy but I am sure it isn’t as bad. The easiest way we found to get to Marienplatz is to take the S Baun to Marienplatz station. There are 3 station entrances in the plaza. Munich’s public transportation system is awesome.