Having stayed at the Jumeirah Hilton on several occasions and Hilton the Walk on our last stay, we much preferred the Walk location. Hilton on the Walk is close to the marina and the beach is accessed via a bridge over the road and through the Jumeirah Hilton. There are plenty of restaurants within walking distance at nights. Although the Walk location has a small pool, it was always very quiet compared to the pool and beach at the Jumeirah Hilton. Both of these hotels have Exec lounges, but the Walk Hilton has a slightly bigger lounge. Not sure that as Gold, you would have access. Think you have to be upgraded to an Exec room to get lounge access. Both hotels provide an excellent breakfast buffet. Hilton the Walk has a large covered car park as taxis enter the hotel via the car park which gives entry to the hotel from the marina side. Not sure about how big the car park is at the Jumeirah Beach.
Have also stayed at Hilton Dubai Creek and this hotel is more of a business/boutique hotel. We usually book it for the first couple of nights on arrival as it is very close to the airport. It's very nice, but we would not want to spend a long period there. The rooftop pool is very small and tends to get busy from early morning. Not sure what the parking situation is like at this hotel. Again, as Gold, you should get the full breakfast.