Nagomi is a recently remodeled, bright and very clean sento within layover distance from Kansai Airport. From Rinku Town it's a 10 or 15 minute walk. Everyone was very cheerful. I loved the laminated news articles hung up in the rotenburo to read while soaking. The bathing areas were small, so you'll have to do a bit of dodging people or waiting for a bath (mostly the small cold water bath). The changing room does have more space however. I really enjoyed my afternoon bath here.

Update Winter 2018
Still a great option for a quick bath on the way to or from KIX. Clean, friendly and the outdoor bath is a star.