To start with this is in a superb location and everything is really within walking distance which is a bonus!
The flat itself is clean and spacious. It feels very luxurious and it has everything you would need for a short or long stay.
The bedroom is at the back of the flat away from the street and therefore it is quiet. The bed was amazing and we both slept very well.
If you are coming to Dublin and want a flat in a central location I would thoroughly recommend apartment #2!