Was actually in Dublin around this time last year. While prices can be high, I found hotel rates to be quite reasonable actually.
Stayed at the Ariel House in Ballsbridge, which is one of the best and most unique hotels I’ve experienced. Its beautiful décor is impressive and extravagant, but the price was surprisingly affordable, could easily have been much higher, was about 70-90£ per night breakfast a la carte included. It was every penny worth it! Booked it about 10 days in advance (sometimes, but not always, booking last minute can pay off).
Locals and hosts advised me to avoid large parts of the north side of the river, which I did. Driving in from the airport, I got a firsthand look at it - was unlike anything I’d seen in Europe before. It’s not Hastings, but it’s definitely not good either. So, when choosing where to stay, I’d prioritize safety over price🍀