Wi Fi Extender

Hi...have internet and wi fi provided by Skynetlink...all works well...however (always one) in a couple of our rooms the wi fi does not reach...therefore no playing with tablet whilst laying in bed...(I know...I know). Can I just go to media markt and buy a Wi Fi extender to solve the problem. Amazon are cheap but once sent here its a pig to sort out if it does not work. All help gratefully recieved.

http://www.amazon.es/TP-LINK-TL-WA854RE ... ds=tp+link

Simple to use. I have this in mid point in the property (router downstairs in cupboard). To set up you press the WPS button on your router (MAKE SURE IT HAS THIS) and press the button on the device. Simple. You can probably get at media mrkt for a little more, but easier to return if needs be.