Budget: 300 baht up
Time to go: Sunset (around 6 pm) till 8 pm
Address in Thai: โรงแรม Banyan Tree สาทรใต้
Location: See Map
GPS coordinates: 13.723126, 100.539912

Is a good place to watch sunset and have private conversations
Stuff will try to send you to the rooftop on the last floor but you can go instead on 52nd floor called Safron bar which is not so crowded
Dress code for gentleman applies (long sleeve, long pants, closed shoes)