I spent one night at Arif's B&B with my girlfriend. Although Arif was absent when we came, his roommates were very kind and helpful.
The apartment is well located in the southern suburb of Dublin, with buses connecting it to the city centre. There is also a shop nearby if you need to buy anything.
The room itself was clean, comfortable and quiet and we had no difficulty sleeping. The wi-fi connection was erratic at times but sufficient overall.
The price was very good, so I definitely recommend Arif's B&B if you want to stay in Dublin