After scouring the search results, I couldn't find any information about "Андреевский склон" (Andreevsky slope). It's possible that it's a lesser-known or non-existent ski resort in the Toksovo area of Leningrad Oblast, Russia. The search results are dominated by information about Severny Sklon, a ski resort in the same area, which offers a range of amenities including slopes, rentals, accommodations, and recreational activities. If you're looking for information about a specific ski resort, I'd be happy to help you investigate further.