Do not book with Ayahualo Tours, it's a scam. Very unproffesional and untrustworthy agency.
We arranged a two way pick-up with them, from Granada to Laguna de Apoyo and back (the day after). On the way back we were stood up and when we called the office, they said a taxi driver already came by and we weren't there. We checked at the reception of the pickup point and this was true, only he was there 45 minutes before the agreed upon time. When he couldn't find us, he just straightaway left. We know we were there on the right time, since it said so on our receipt, and we were there 15 minutes before the agreed upon time. They would not send a new driver, and in the end we had to book a new taxi at the laguna.
Of course a misunderstanding like this can happen, but no one at the company was willing to deal with their mistake. We went by the office two times to discuss the matter in all fairness, but were not able to talk to anyone with a bit of responsibility in his gut. The staff is really unmotivated and the management is hiding and refusing to speak to you.
It's a shame because most companies in Nicaragua are really professional and do their job with a lot of passion. Ayahualo is that one rip-off you should just avoid at all times.