Stay at Geirenger?

I´m planning to visit Norway on next august.

My first choice is land in Alsund, stay one night there, rent a car and go to Geiranger.

In Geiranger I want to stay one or two nights and explore the region.

Is it feaseble? Is it the best way to know the fjord or stay at Alesund and take a ferry/bus to know the fjord and return to Alesund is better?