Mic is a superb host. He's very welcoming and will gladly offer you a list of locations for food, drinks or sightseeing. He's also a good chat and really knows his Irish history. He'll gladly tell you all about it over a nice cup of coffee.
The location couldn't be better. You'll be staying in the heart of Dublin and you can go anywhere on foot. Any place further and public transport is right around the corner. There's several options for food and drinks within near vicinity of the AirBnB.
The room is small, but that shouldn't matter much if you're out and about a lot. (I was.) If you're looking for a place to sleep and nothing else, it's more than serviceable. Also plenty of space to leave your belongings. And the other commodities are fine as well.
If I had to nitpick; Mic works from home so outside the bedroom there's less privacy to be had. It worked fine for me (as mentioned earlier, I was out a lot), but it's something to consider for more private folks.
All in all, it was a good experience and definitely recommend!