This toilet installs well, looks rather nice, and preforms excellently; however, the installation of the tank to the bowl does require some attention due to the fact that the seal needs to be compressed, and 3 point of contact needs to be made...  One may default to simply bolting it down but such may result in it not being properly seated, and it is potentially required that you press down on the tank while bolting it down--so the seal sufficiently compresses, and you can get it "flush" so the weight properly distributes.

All considered this is a very compact, cost effective, and straightforward toilet to install--merely note the install manual, and ensure you get the 3 points of contact correct.