Sarasa hotel Nipponbashi

This hotel is modest and moderately priced, yet still decently furnished for a traveler who packed light. There's no pool or gym; but, being so far from home, you can't beat a laundry room for so long. Things like that are key for long trip that keep you on the move.

A short walk from Namba City will get you there.
The staff speak pretty good English, too.