I would deffinetly recomended Moscow conserwatory, but there is also, for me, one of the greatist piano teacher in Germany-Karl-Heinz Kamerling, so I would suggest him.
Karl-Heinz Kämmerling is both in Hannover and Salzburg(Mozarteum)
ViennBre -Noel FloresBruxelles and Berne - Aleksandar MadzarPrague- M. LapsanskyParis - J. RouvierFrancfort- L. NetochennyKoln - P. Gililov and A. ValdmaMunich- E. WirsseladzeBudapest- G. NadorGraz- A. SatzMoskouv - E. Malinin, V. Gornostayeva
Vienne -Noel Flores