I was only in Dublin for a very brief stay, and chose the Jacobs Inn because of its proximity to public transport and multiple options for dead-of-night airport rides.
I didn’t get the chance to really interact or hang out with anyone because I was only in Dublin for ~34 hours (half of which being sleep), but the location seemed to draw a great mix of folks from all over. There was plenty of activity at the bar as well as a few events organized. I didn’t partake, but there seemed to be plenty of options at breakfast.
Staff was very friendly and made for a smooth check-in process. They were available for any questions, and the cleaning crew was on their game. While not entirely uncommon, it is important to know that towels are not included and come at a cost of €2.50 (with free replacements).
The facility itself was clean and well organized, and I found the sleep pods to be as well-appointed as a sleep pod could be (a shelf, multiple lighting options, and a couple usb-a ports. There was a locker and a cubby directly underneath my pod, power outlets nearby, and a full en-suite bathroom (with full gendered facilities down the hall).
I don’t always stay in hostels, but would absolutely give future consideration to the Jacobs Inn.