We spontaneously booked a 1day Ayuasca Ceremony (which was held together with the 3day retreat).
The setup was very professional though very welcoming and open hearted. Joanna and the shamans made this journey as comfortable and safe as possible. Since Etnikas bring together the shamans of the Andes with those of the jungle you get the best of both worlds.
We never felt alone during the entire process (especially when it comes to the hard bit)...
If you think of trying Ayuhasca and do not have the opportunity to do it in th jungle directly then Etnikas is definitely a recomomendation.