Our family (3 adults, 1 toddler) stayed in Paul's apartment for 3 nights. The property is convenient located a few minutes south of St. Stephen's Green and a 15-20 min walk to most of the downtown Dublin attractions. We were able to easily around without a rental car during our stay in the city.
The apartment can accomodate a rather large group with multiple beds in each room. Given the downtown location, there is quite a bit of space.
The only aspect of our trip that kept this from being a 5-star rating was the noise level. We booked outside of the Temple Bar area to limit noise with our son. To be fair, the property description acknowledges the fact that the flat sits above a traffic intersection. The degree of noise - even with the windows shut - was simply greater than we expected. This would be less problematic for adults, but with our son it led to a few restless nights.
Overall, a great stay and a nice place for anyone looking to explore Dublin by foot.