We had a pleasant stay at Lucían overall. The location of the apartment is great for a short visit of Dublin - all the main attractions in the city are reachable by foot.
The apartment has a good size for 4 people. We were a bit disappointed by not having enough towels and there were no bed linen on the couch. The couch is also next to a not so sound proof window which might be annoying if you have a light sleep.