Night life in Granada ?

Im a single guy planning a trip to Nicaragua in the fall but I do not wish to stay in a town where my only company is a bottle of beer at 2.00 a.m on a Saturday morning . 3 years ago I was in Jaco C.Rica and atleast there was an abundance of ( available compa�eras to choose from ). Can I expect ATLEAST a little of the same atmosphere in Granada and San Juan del Sur or must I travel to other parts ?