Hi again folks, back for some more advice 
I have a friend who lives in a rather big house, and it's on two floors. The wireless router doesn't provide a good enough signal for the laptops/phones dotted about the house.
I had initially suggested PowerLine adapters, but he doesn't want to be hard wired as he moves from room to room with his laptop apparently.
So my question is this. Can I use PowerLine adapters to setup a couple extra wireless hotspots? Eg if I have PowerLine Adapter "A" by the router, and "B" upstairs, can I plug a second wireless router into "B" in order to have a second hotspot upstairs?
Or is there a simpler solution such as using wireless extenders that pick up and amplify a signal?
Not my area of expertise as you may have gathered
Any advice appreciated.

I have a friend who lives in a rather big house, and it's on two floors. The wireless router doesn't provide a good enough signal for the laptops/phones dotted about the house.
I had initially suggested PowerLine adapters, but he doesn't want to be hard wired as he moves from room to room with his laptop apparently.
So my question is this. Can I use PowerLine adapters to setup a couple extra wireless hotspots? Eg if I have PowerLine Adapter "A" by the router, and "B" upstairs, can I plug a second wireless router into "B" in order to have a second hotspot upstairs?
Or is there a simpler solution such as using wireless extenders that pick up and amplify a signal?
Not my area of expertise as you may have gathered
