I always thought it was a 500
Pretty sure with the new ATP World Tour schedule, ATP 500s are always in the same week and 250s are always in the same week. No mixing and matching. Both Basel and Valencia are 500s this week, for instance. Not sure if that's the best strategy but I guess that's what the ATP wants...
Meanwhile, disappointing semifinal results today for me. Looking forward to the Basel final but meh to Valencia tomorrow.