You could take Blue Bird Taxi or Express Taxi to take you to any places in Jakarta. Please be informed that the taxi fees might be expensive due to the traffic jam in Jakarta during, especially the rush hour.
TransJakarta Bus System
You could take TransJakarta Bus (“Busway”), follow the Corridor 1 Route from/to Blok M Bus Terminal at the South and Stasiun Jakarta Kota at the North. To take the Bus, you must buy a Smart Card (e-Ticket) amounted at minimum Rp40,000 (USD3.5) including Rp20,000 (USD1.6) non-refundable deposit at the Bus Shelter or the following banks: Bank BCA (Flazz), Bank DKI (JakCard), Bank Mandiri (e-Money, e-Toll Card, or Indomaret Card), Bank BRI (Brizzi), Bank BNI46 (BNI Prepaid),Bank Mega (Mega Cash)
Commuter Line Train
You could take Commuter Line Train and stop at Sudirman Train Station then use TransJakarta Bus or Taxi. You need to buy the Smart Card at the Convenience Store in the station.