In the heart of Sandton, The Catalyst Hotel by Newmark Hotels & Reserves is perfectly designed and positioned for locals and travellers who want the best of both worlds — to feel connected to the energy of Johannesburg’s most vibrant district without sacrificing calm, comfort, or style. In the heart of Sandton, The Catalyst Hotel by Newmark Hotels & Reserves is perfectly designed and positioned for locals and travellers who want the best of both worlds — to feel connected to the energy of Johannesburg’s most vibrant district without sacrificing calm, comfort, or style. In the heart of Sandton, The Catalyst Hotel by Newmark Hotels & Reserves is perfectly designed and positioned for locals and travellers who want the best of both worlds — to feel connected to the energy of Johannesburg’s most vibrant district without sacrificing calm, comfort, or style. Whether it’s a weekend escape or an indulgent mid-week reset, this is where staycations take on new meaning from the moment you arrive.