I don't usually leave negative reviews, but...
Clon Ross isn't a *bad* place to stay. It's a good location (5 minutes walk to the train station, 15 mins into Cork city centre), the breakfast is good, the place is clean and the staff are friendly.
The couple who own the B&B are lovely. However, the other staff member, in my opinion, was overly friendly. I know how that sounds but when you've just spent the day travelling or are busy or trying to relax, you don't want people trying to catch you every time you leave your room just to repeat jokes to you.
The rooms themselves are fine. A bit small, no problem. The site says there are tea/coffee making facilities in the rooms - there's not. There is WiFi which has good signal but the password is downstairs. I would suggest making a note of it before you go up to your room or else you run the risk of bumping into talkative staff again.
Also, be prepared - it's so noisy! You can hear the conversations in the other rooms, everyone that is being checked in, and everybody running down to breakfast at 7am.
I would stay here again if I absolutely had to - like I said, it's not the worst - but there are better places for €10 more.