We were a group of three doing a quick 36-hr trip to Dublin and this was the perfect location for us to be able to quickly walk to our early morning tour bus. Lots of bars and food as soon as you walk out the door which is great for groups like us who don't have a lot of time to spare but be prepared to pay tourist prices.
I received detailed instructions for self check-in; no issues during check-in or check out. The only negative is the layout of the unit; being in city center means the apt is small and there aren't windows other than in 1 bedroom (great for encouraging us to leave early in the day but not when we wanted to hang out in the apt after drinking OR for the bathroom). Thankfully each room has doors which provides privacy.
Overall, fantastic option, especially if you're doing a quick trip.