Found this place by accident using Google Map. A easy 20 min walk there from IconSiam, when near it the road is quiet and full of trees on both sides, like a small village but just minutes away from the busy and noisy main street. The entrance is behind the security guard office, a bit hidden. There is no charge to enter. The house is well maintained, with 2 floors, you can still see some colourful murals on some of the walls. This place is late 19th century, very elegantly built. You will enjoy more if you are interested in Chinese history in Thailand. There are shops and eateries on-site but we didn't try any. You can walk towards the River front to look at the view, next door in the same compound is the temple for the Goddess Of The Sea but it is not opened. Can easily spend 30-40 minutes there and walked around the neighbourhood afterwards.