However we earlier got lost for more than 2 hours. After going to another place in Bukit Timah first, we wanted to go straight here but kept getting into the wrong roads and exits. So we arrived after Isyaq (time for the night prayers) and the door to the tomb was closed.
It is located just outside the main part of the tomb building, at a rather open area.
Even better there was a group coming up and they did some zikir, utterances of remembrance of Allah according to certain formulas.
The top of Habib Nuh's tomb.