We booked 3 deluxe rooms in this hotel, 5 months before visiting Delhi. We also arranged transfers from the airport with the hotel, and had been communicating with them before we arrived. The transfer was at the airport ok, but took us to a different hotel! We didn’t actually realise this as it was 4 am and we had just arrived in Delhi after a 10 hour flight. It was when we were shown our rooms we realised we had the wrong hotel. We went back to reception to be told the Sunstar Residency was fully booked so they moved us to this sister hotel. We were told there was nothing we could do! As we were all shattered, said we would fix it the out the following day. The rooms we had although clean, were tiny, old, and 2 were on the main road, which were very noisy. Only one of the rooms were probably an upgraded room, only because it was larger. The following day the manager said there were no rooms in the Sunstar, but offered us another sister hotel for double the amount we had paid for our so called deluxe rooms in the original hotel! After a lot of discussion, the manager moved 2 of us to slightly larger rooms away from the road. As we were only there another 2 nights we stayed there. although we had sent and received a few emails, at no point did they say there was a problem with our booking!
So be aware! The Sunstar is a change of hotels in the same area and will move you without notifications to a “sister” hotel if they need the room you booked.