I stumbled across an updated map of construction sites for the New Town Centre and it did show that The Marriott hotel was still on the cards and it had been moved from that new FNB site to New Town Centre in that very spot where construction is happening now so this is very possible that this could be a Marriott Hotel???!!! Can't remember where I found this map but it was from a reliable source I think it was somewhere on skyscrapercity???it still boggles me why this one is so secretive. I cannot be offices to let as they would have been scouting for tenants. I doubt it is one owner occupier. It is clearly not residential. Is it a hotel?