I can only recommend Daniela's accommodation! It is very clean ( this was a high priority for me) and private, where you can have a good night's rest.The place is a quite suburbain town by the sea, with the apartment about 6 minutes walk to the commuter train, which runs frequently and takes you to the heart of Dublin. Also you can take a direct bus (102) from the airport, which takes you almost to the door (just 10-15 minutes walk).
As for the hosts, they are an extremely kind young couple who are very helpful and flexible, and easy to reach should you need it during the day. So go for it!😊