What makes a good Architectural Design?

I want to make a Condominium.

Some examples of innovative condominiums are...

The Sail @ Marina Bay
The Interlace Condo
The Lumos @ Orchard
Singapore Civic and Cultural Centre

Criterion:
1. Solves the problem
2. Aesthetically appealing
3. Saves space

The Sail and Lumos has filled the Criteria but THe Interlace condo take s up to much space.