When they converted the rooms on the 5th floor of AKL into AKVillas, they took the 6 rooms at the end of each hallway "spur" and made them into Grand Villas.
As far as what to request, what did you book? If you booked a Concierge 1BR, then you can request a savanna view but it is just a request. Savanna view is not guaranteed. There are very few Concierge rooms and they face either the Sunset Savanna or the pool and the room assigner decides which view you get.
If you booked a Savanna View 1BR, then you can request a particular savanna, and you could request to be close to the lobby, or whatever your preference might be. But again, these are just requests and you could end up having none of them met. For example, lots of people request the Arusha Savanna but since only about 30% of the Savanna View rooms face that savanna, not everyone can be accommodated there. So by all means add a request if something is important to you, but just keep in mind that it's only a request, not a guarantee.