Original:  He worked as a night guard at the House of Art (Nyumba ya Sanaa), a  centre for the development of African art and craftsmanship in Dar es Salaam.
Revised:  He worked as a night guard at the House of Art (Nyumba ya Sanaa), a cultural centre for the development of African art and craftsmanship in Dar es Salaam.
Edit intent: meaning-changed