We did the four day Inca trek with Juana and it was amazing! We really appreciated her taking the time to stop and explain everything to us along the way. She was very knowledgeable and enthusiastic about the whole trek. It is rough though we were not aware as to the extent of all the stairs we would be climbing.
The food was amazing, the porters did a great job making sure that we ate well balanced and healthy meals the whole time. Our only compliant was the mats that we slept on. Honestly they provided pretty much no cushion at all. Given our exhaustion this was not too much of an issue we fell asleep just fine, but it did add to the soreness every morning.