I definitely recommend staying at Jim Edward's Guesthouse. If you understand this: is more of a hostel, is a value accommodation, is above a restaurant, etc., you will have the right expectations going into it.
Parking - right now (Sept 2021), the street Jim Edwards is on is closed for pedestrian traffic only due to outdoor dining. You will need to park in town and walk your luggage to the hostel.
Entrance/Check In - you enter through the same door as the restaurant and check in at the bar. Once you're checked in, you go back to the entryway and take a separate door upstairs.
Food - GREAT food. Good drink list too! I thought eating at the restaurant below our hostel would be a little too expected or that I'd want to try something different, but honestly Jim Edward's is very highly rated, and for good reason. So skip the search and eat here at least one night of your stay.
Cleanliness - it's clean, yes. But I will say you need to have the right expectations. Because it is a harbor town, it will be more humid/moist than you might expect. Also, because it's above a restaurant/pub, you will have more staining/debris on the carpet than at a standard hotel -- in addition, you're in close proximity to a kitchen, this means that there's a little grease in the air, and you can feel it. I'm pretty choosey, and for the money/value, none of this bothered me to the point I wanted to walk out.
Communication - Once again, it's a hostel and a restaurant, so the host/staff are working round the clock. There wasn't necessarily a lot of communication about the check-in, or how to find the owner for check-out, but if you use your brain you'll be fine. (i.e. Show up after check-in time. Go to the front door. Ask an employee if you don't know who to talk to about checking in. If you can't find an employee/owner at checkout, then just leave the key at the bar and take a picture of it for safety and to send to the host in the Airbnb app.)
Location - you are in the heart of town. Truly. There is no better place to stay. You could easily walk out and go to 7 establishments in a single night if you wanted to do a serious pub-crawl.
All in all - I do recommend, just set your expectations at the right level and you'll have a GREAT time in Kinsale!