In the Desert Resort somewhere
No.
you have to find all the Pokemon then talk to the guys blocking the resort area
A trainer with a solosis in Pokemon Black is found in the Desert Resort. The person that has it should be a doctor after you exit the gate to the Desert Resort.
in the servile area
At the resort area
In the Desert Resort
The Resort Area is located on an island on North Sinnoh off of route 229. There are not Poke-Marts in the Resort area or battle gyms.
You can get a syther above the Resort Area. there will be a patch of grass above the Resort Area.(You have to have a pokeradar)
get to resort area
Your villa is in the resort area
In The Resort Area
The Resort Area