It's an amazing, and needed, transition. The design captures the Pokemon nostalgia while embracing the 3DS technology, but as mentioned by other users there are some faults. Textures in some scenes look jagged and pixels seem unnecessarily noticeable., while others, the city that derives from Paris, are smooth and glistening.
When considering Ocarina of Time you would think the developers could push the graphic threshold a little more. Nonetheless it's still a massive improvement and hopefully they are upgraded before the game's release, or at least made up in the sheer amount of fun expected. =D