Accomondation is as seen on pictures. For three people quite small but if you don't want to spend a lot of time in the appartment totally fine.
Bus stop is very close. Going downtown takes 20 minutes and going to Howth 25 minutes. Supermarket ist also in walkable distance (not one of the cheap ones though but you get everything). Antoinette is very open and helpful. She really wants you to enjoy your stay and make the most out of it.