Just thought I would suggest a purchase if you can afford it.
We spent 150.00GBP on a Shinco Sat Nav in Singapore. The 'Lady' was one of the best things we have ever bought.
Apart from a few false starts trying to take us onto the Eastlink Freeway in Melbourne which hasnt opened yet she is brilliant.
Its great being able to drive where you want and explore down a road knowing she can get you back on track.
She gets us to within 10 mtrs of a street number and you can browse through a list of places of interest including shops and petrol stations and pick one knowing how far away it is.
We love the lady - I know not everyone will be able to afford it but if you possibly can - do it. It has made being in a new country so much easier.