A box valance with silhouette blinds if the windows are deep enough.

Roller shades are a great option if you don't like curtains. You can get them wide and they are thin enough that when they are rolled it's not an obnoxious size yet they can go floor to ceiling. Hope that helps!

If your condo is more modern, the roller shades are a great option. Think of going darker rather than lighter in colors. The dark shade will allow you to see through easier. Lighter shades reflect light within the fabric and make it more difficult. If you want to soften it up, you can put drapery panels flanking each window. They create the illusion of full drapes but never close.