Mary and John's place was absolutely perfect. With having two separate rooms, a full kitchen and common area, my brother and I didn't feel like we were living on top of each other in the slightest. We really could not have asked for a better Airbnb experience--and this was our first time using Airbnb! The apartment was very clean, convenient to the train that takes you directly to Dublin city centre (roughly 30 minutes), close to many restaurants and pubs (Gibney's is a must), and the apartment is located right in the marina--which made for nice scenic walks. On top of the apartment being great, Mary and John were the epitome of Irish hospitality. Lovely people.
Not sure when I'll get the opportunity to use Airbnb again, but needless to say, Mary and John will be a tough act to follow. :)