It is given that, 
The eight people are A, B, C, D, E, F, G, and H.
B lives in an even-numbered flat on an even-numbered floor. 
E and B live on the same floor. 
E lives on a floor immediately above G's floor but not in the same numbered flat. 
We get,
|  | Case 1 | Case 2 | 
|  | 2 | 1 | 2 | 1 | 
| 4 | B | E |  |  | 
| 3 | G |  |  |  | 
| 2 |  |  | B | E | 
| 1 |  |  | G |  | 
G lives on a floor immediately above C's floor in the same numbered flat. 
Here, case 2 is invalid. 
A lives on a floor above F's floor and neither of them lives on C's floor. 
We get,
H lives on a floor below D's floor but not in same numbered flat.
The final arrangement is,
Here, H lives on the first floor.