This space is just lovely, especially since being in the main part of Dublin is more expensive! Karen was very welcoming and communicative throughout our whole stay and the bed was very comfortable. The bathroom is shared as stated in the listing.
I recommend this place to anyone for the value, host, and proximity to the train/bus stops. But definitely keep in mind that if you plan to do a lot of late night drinking/activities in the city centre, public transportation will stop running past a certain time at night, so you would have to rely on a taxi to get home. So if you dont plan on hanging around The Temple Bar and such, then this is a perfect place.
Sidenote: There is a great Irish pub/restaurant within walking distance past the Coolmine station called The Carpenter (also next to a convenience store); any visitor should try it if they don't want to go into the city just yet. Ate there 3 times, great fish & chips and place to drink.