The Ibis Mangga Dua is in the outskirts of the city - its good value and we were happy with the hotel and our room.
The airport is a 40 minute taxi ride away - which cost us £5 (100,000 rupiah) including the road tolls and a tip. Just make sure you use the Bluebird taxis who seem to be the local taxi company that you can trust - we did use a couple of other taxis while we were there but one refused to use his meter so we got out and the other took us the long way round. At the traffic lights the taxis are surrounded by people selling various items (if you ignore them they go away) - on one occasion, the seller had a bush baby which he put on the taxi window and let it crawl so we could see it!!
If you leave the hotel to have a walk, there is a shopping centre nearby (more like an indoor market) with lots of bargains, but remember to barter. There are street vendors selling food outside the hotel but we didn't try them, there is also a McDonalds nearby.
There is a busy local market in the street outside the hotel and if you wander into the back streets you will see where the locals live. As we were wandering around we felt perfectly safe - but were the only westerners in the area - which attracted the attention of the locals, who just wanted to say hello.