Geometry on this lake really needs to be cleaned up

relation/1170000 is a (very obvious) invalid multipolygon. Look at all these unclosed shapes!

Swan's Garage has permanently closed, a new business (grocery store?) is in the process of moving into the property.

The Original Joe's is located at 1482 Merivale road, while the fish market and seafood restaurant are both located at 1480. Should this building be split into 2 like how semi-detached houses are?