This review was published on Viator
We booked Joker for a day of palace/temples/river sightseeing in Bangkok with our two children (11&14). He was a really knowledgeable guide, who spoke good English and came up with an itinerary based on our suggestions plus his suggestion of a longtail boat trip on the river which we really enjoyed.
Easy booking process and received emails and a telephone call from Joke the day before confirming things. Highly recommended.