I purchased this for my daughter (5'7" 120#) who liked the larger volume. I am 5' 10" and 210# and find the seat very comfortable and has a reasonable amount of adjustment. The boat paddles easily through the water and tracks straight. The foot braces are a little on the small side but don't create a problem even on longer paddles. Stability is excellent and it maneuvers better than my boat. My boat is a Wilderness Systems Tsunami 125. She is able to keep pace with me. The Kestrel is easier to get in and out of due to the slightly larger cockpit and higher deck.
He wanted on the water cheap and we got this at a local closeout outfitter for about $375. He wanted a beginner boat and easy to get in and out. This covered his basics but when I paddled it around I found it moved easily through the water, at 28.5 inches, it is narrow for a rec boat. The open cockpit is a breeze to get in & out, and as he pointed out he can put his grandson in front of him (or a small to medium dog). He placed the hatch cover on his boat which makes easy covered storage for a cooler and lunch.
The only shortcoming of this boat is the seat. It has the basic seat not the XT so it lacks padding, nothing an aftermarket cushion can't help. This is not a boat for weekend expeditions or whitewater but for his needs it is a great boat.
I would recommend this boat to a beginner as something you will not outgrow in a year.