Network Operators expect to accurately satisfy a wide range of user's needs by providing fully customized services relying on Network Slicing. The efficiency of Network Slicing depends on an optimized management of network resources and Quality of Service (QoS). We focus on Network Slice placement optimization problem to give an insight about a latency-aware Network Slice Placement model through a Proof-of-Concept (PoC) illustrated by an Interactive Gaming time-sensitive use case. Therefore, we showcase the proposed Network Slice Placement solution considering user location as a primary constraint to ensure QoS and Quality of Experience (QoE).