The tiles should be "かど" and "の", not "か" and "どの".
It should be あけます, right?
The restaurant is not the one to open, it's the one to be opened (sorry if this doesn't make sense), because it's not the one doing the action (sorry I lack the correct words
Intransitive and transitive verbs. X
Also, i would say on the corner.
"On the corner" was accepted for me.