We had a very nice stay in the twin room at Theresa's BnB in July. She's a lovely, enthusiastic person who gave us recommendations about Dublin right away. The room is good, you just have to find a way to put your luggage somewhere, since it's rather small. There is one bathroom for up to 3 rooms. It might be nice to provide more room for the guests' stuff, but you get along anyway.
The breakfast consists of cereals and milk or white bread and jam/honey/nutella. Theresa provides something else sometimes, like cookies. You can have black tea or coffee. For anything you like you can also sit in the garden area, which was nice. If it's important to you that everything's clean and tidy the garden might not be for you since it's rather wild.
In the evening Theresa let us use her microwave, which was very kind.
The only thing that was difficult was the boiler of the shower since it was adjacent to our room. It was really loud when used, even with oropax. Since shower times are from 6am to 11.30pm you could be disturbed by that.
Overall it was a wonderful time at Theresa's which we really enjoyed! Heartly people and a nice neighborhood (shopping mall is great), Dublin reachable in 25min altogether.