First time to Ireland

Hi everyone!

My husband and I (40) are travelling with our teenaged son (17) to Ireland for a week at the end of April. We plan to fly into Dublin and rent a car.

I want to see the beautiful, sweeping views Ireland has to offer. I'd also like to be able experience local culture and of course a few pubs along the way.

I am looking for some pointers on where to visit and stay. Should we stay in one central location or should we stay in a few locations and move around? What are some must sees?

I'm a platinum Marriott member, so if there's a Marriott hotel worth my time I would consider that. I can't use my points at the Sheraton Athlone, but hear it's a great hotel. We don't have to stay at Marriott's though, any hotel, local b & b would be fine too. Would love to stay somewhere nice and interesting, should we try a castle?

Any tips and recommendations would be appreciated!