The best direction for your home to face for hydrangeas would probably be east, but north would work too. Facing east, it will get morning sun afternoon shade. Facing north, the beds will get only what sun comes in from the east and west ends.

I adore hydrangeas and grow several varieties. I highly recommend Endless Summer and Blushing Bride. They really do bloom all summer long.

I would also recommend that you be sure to mix a liberal number of evergreen shrubs in your front beds along with your hydrangeas. After the first hard freeze, those hyrangeas will be nothing but bare sticks until spring. You might think of using evergreens along the wall of the house and the hydrangeas in front of the evergreens. Nice deep beds are much more attractive anyway. (You can also underplant hydrangeas with spring flowering bulbs. The bulbs give some winter interest, and the hydrangeas wake up and cover the dying bulb foliage in the spring.)