It's so exciting that you'll be in Dublin for the first week of April with your family! A bedroom with a separate suite seems like a great idea, and I'd love to provide you with some suggestions.
- The Hilton Hotel
in Dublin has family rooms with an interconnecting room available.
- In the middle of Temple Bar, the Jurys Inn Christchurch
is a great place to explore the city. They have adjacent family rooms and suites.
- The Maldron Hotel
on Pearse Street has the option to add interconnecting rooms to your own room.
These are just a few suggestions, but you'll find that most hotels will offer you the option for connecting/adjoining rooms. If you reach out to the hotel of your choice, they would love to tell you more about availability and options. Take a look here
for an overview of hotels in Dublin.
I hope this was helpful, and that our other members will be able to provide you with more tips and suggestions! :)