you have quoted Location so that its not understood to be a variable in your frame but rather just literally the string Location so remove the quores around it if you want it to be understood as taking the values NYC, Paris , etc.
geom_* are for mapped aesthetics, i.e. where your data should change a visual dimension of the chart.
Typically a title is just a description up top of the chart that is independent of the data, so there is not a geom for that.