I stayed three nights on a long weekend and enjoyed my time! Decent space for one or two for a few days. You best get a bike from the pier (€15 a day) to get to Cliona's place. It's a 15 minute ride and straightforward to find.
The place is basic and you will have to work with a small electric hob for cooking. I had no problem with that for a few days. Staying on the island is fab, especially when you can see the hotspots without the daytrippers (visit Dun Aengus or Worm Hole after 4pm!). Cliona's place is good value and I am looking forward to coming back.