Hey, that's where I used to work! Stop making me miss it...
Ganjavih, it's really not that bad, unless it's changed a lot in eight months. From passing through there every day, there are a few buildings for lease, but a lot of them are occupied. The new Westin hotel is renovating a bunch more. None of the buildings look like they're deteriorating, either. They all seem to have been kept in pretty good shape. A lot have some very interesting shops and restaurants.
I think the CDP Capital building is the best office complex built in Canada in the last decade, bar none.
The coloured-window building is the convention centre. The addition looks pretty cool, but it's unfortunately a bit of a wall between downtown and Old Montreal. It's built on top of the Ville Marie expressway.
They've done some amazing projects covering the expressway in that area. Take a look at the Place Jean-Paul Riopelle and Square Victoria, which are built on top of former open trenches, along with CDP Capital.