Like so many other things, the answer to your question is "it depends".
How many chickens do you plan on keeping?? Based on the dimensions of that coop it has less than 11 square feet or so, which means it might fit 2 hens. But since there appear to be no external nest boxes, that tells me your floor space inside will be further restricted by the nest boxes.
I question their claim that this coop will fit "3-4 regular sized chickens or 6-8 bantams". Using the design guidelines here at BYC, four chickens would each require a minimum of 4 square feet of space in the coop , and that means the inside dimensions would have to be at least 4 feet by 4 feet (16 square feet total). This coop's outside dimensions are 45 inches by 29 inches.
Are you going to free range your chooks or do you need a covered run and a permanent installation??
What are the dimensions of those windows and do they provide all the ventilation you really need??
What does the inside look like?? That tongue and groove siding looks great, but is it also providing a myriad of cracks for roost mites to hide in??
Speaking of roosts, what does the roost look like??
How will you anchor the coop to keep it from blowing over in a strong wind, or being knocked over by a large dog or other hungry pred??
When you pull that pan out of the bottom, what is above it to keep the chooks in the coop??
I know that's a lot of questions, but they are things to consider before you settle on a prefab coop like this. It does look very nice and well made, but is it practical for what you need?? Will it really fit as many chickens as you want or need to raise??