Very nice experience overall. The neighborhood can be a bit scary late at night, but the apartment block is completely safe barred with many doors from the exterior of the building until you reach the apartment itself. One more thing is the humidity which is quite high. I left my passport on the table and in the morning it had almost folded. I guess it could also be a general Dublin thing. Noise-insulation could be improved and adding keys to the bedroom doors would be also a nice addition in my opinion.
The bed was quite comfy and we slept really well the three nights we stayed. There were clean towels and an awesome doorstop (fat hedgehog doll).
We didn't meet the owners, but the little we communicated they were extremely responsive and the instructions they provided were very accurate.