Using the map provided by Chris F above, look at the centre bottom of that map, and you will find the number 21 bus going north and south. At the bottom of the pinkish background on that line is an orange flash signifying the end of the fare zone. Three stops above that orange flash is Hammerauer Strasse which is your stop for the Blobergerhof.
So, short answer, yes.
On the other hand, you may have found somewhere else on Moosstrasse which unfortunately isn't the Blobergerhof, in which case you will need to see which is your bus stop and then look to see if it is north or south of the boundary marked by the orange flash.