First use your Dowsing Machine. It will be the only item there.
there is no key for valor lake front
a lava cookie
valor lakefront
In the Valor Lakefront.
Azelf is the legendary Pokemon found a Lake Valor.
The key is somewhere just past the south entrance hidden on the floor so use the itemfinder to find it.
right next to the back of the hotel in valor lake place
You can get there by going east down the stairs in Valor Lakefront.
On the Road west of Sunnyshore City (east of Valor Lakefront)
the road is opened after you beat elite four
You go to the right of Valor Lakefront, on Route 222. You can see it on the town map by going to your bag in the key items pocket.
walk to the building with the police officer in it and walk out the other side