Soudns like a good price!
For another money saving tip take the bus & metro to your hotel. It cost 12k (25p) as opposed to 480k for a cab. You get the 119 bus from the airport to the metro station and then take the metro to your hotel. I have a map here if you want a copy.
Would also suggest packing some comfortable walking shoes as its very easy to walk about during the day. But perhaps thats jsut me getting old & sensible!