Max One hotel lies on the centrally-located (Monas and Gambir train station are a mere 15-20 minutes' walk away) Jalan Sabang (old name for Jalan Agus Salim), which is one of the best food streets in Jakarta (you can find delicious gudeg, Garuda nasi padang, tahu telor, etc. here!).
This was a clean and comfortable hotel, although not very quiet due to street noise. But it was nothing that a good set of earplugs couldn't mitigate. Unfortunately the quietest rooms at the back, away from the street din, are all twin or single rooms.
Finally, it is annoying having to re-login to the wifi everytime you leave or return to the room level!