I enjoyed the trek a lot! Because it was my first hike it was quite tough but I was surprised with how challenging yet satisfying the experience was for me. I enjoyed the flow of events also.
Day 2 was most challenging and days 3 and 4 were more relaxed with more time to rest and enjoy the scenery. On day 4, I had some difficulty with the guide, but overall we got along very well and he was very informative and helpful for all of our questions and concerns. I wish the trek would including walking to Machu Picchu but my body is also kind of glad that it doesn't.
I would recommend this trek, but I would recommend it as the last part of someone's trip, because many of the group members experienced altitude sickness.