raskoš

1. luxury; splendour; opulence
   Živeli su u raskoši, u ogromnoj vili. — They lived in luxury, in a huge villa.
   Za nas je odmor na moru prava raskoš. — For us a seaside holiday is a real luxury.
2. (of colours, forms, sounds) profusion; richness
   Na pijaci te dočeka raskoš boja i mirisa. — At the market you're met by a profusion of colours and smells.

The word is feminine: velika raskoš, u raskoši.