First of all, it's an independent room without door lock and we communicated it with the landlord but he said the other roommate is trustworthy which was a one-side story. The other roommate during our stay cannot speak English which is okay, but he spoke loudly and continuously and kept phoning in the public space like balcony and kitchen which could be heard clearly by us in our room even with door closed so it's not soundproof room.
For visitors value privacy and hold safety concern, I do not think it's a recommended choice.