Jose, 

Yes it can be deployed on a single vLAN ( also referred to as a flat network). Just leave all defaults for networking, and configure an IP on the network (vlan) that will be used. 

“Add the Controller VM and the Acropolis hypervisor to the same VLAN. By default, the Controller VM and the hypervisor are assigned to VLAN 0, which effectively places them on the native VLAN configured on the upstream physical switch.”

https://portal.nutanix.com/#/page/docs/details?targetId=AHV_Admin-Acr_v4_5:ahv_acr_nw_mgmt_c.html

Thank you! 

So it shouldn't a issue if  I deployed a nutanix in a native vlan . because the customer only have that vlan in his network infrastructure and thanks for tour help.