I stayed at Amanda's and Paul's annex for about three months while I was working in Dublin. They were very nice and welcoming hosts - they even left me a plate of biscuits and fruits and a glass of milk upon arrival. During my stay they were always at hand in case there was a problem. I did, however, enjoy full privacy tucked away to the side of the house and I felt very much at home.
The annex is exactly as described, although the WiFi is a bit patchy at times. It is located in a very safe and quiet residential neighbourhood and the next bus stop is only a five minute walk away. Local train services can be reached on foot in 20 min.
I very much enjoyed my stay at Amanda's and I would recommend it to anyone staying in Dublin, especially if you're staying for a prolonged period of time.