For example, if he designed things a little differently, this would pretty much be what the average Korean, now one of the most technologically sophisticated civilizations in the world, lived in up until the late 20th century [1]: tiled roofs, wooden framed houses (they interlocked with notches instead of twine), raised floors with underfloor heating (still copied in modern apartments), earth packed exterior walls. If he had time to pulp wood and make paper he could do interior finishing, and the addition of maybe 1 or 2 precision metal tools he could square off wood work even better and maybe even produce nicer floors.
In many civilizations, metal cookware was simply seen as more durable alternatives to ceramic cookware and even followed similar design motifs [2], it can sometimes be difficult to tell from far away if something is a bronze or ceramic pot they often look so similar [3]
Pre-industrial revolution, human-scale technology can get pretty impressive, humans managed to settle an entire planet and all of its climates with not much more than the product of their hands, some ideas and a little patience -- basically what this guy has done. If aliens were to kidnap a thousand pre-Industrial Revolution random humans from around Earth and dump them off on a suitable, but empty world. They'd have it all colonized and populated in probably 10,000-20,000 years. That's not even geologic timescale.
Terrifying.
1 - https://en.wikipedia.org/wiki/Hanok
2 - https://www.google.com/search?tbm=isch&q=ancient%20chinese%2...
3 - http://www.users.qwest.net/~rjbphx/BigPicture/PotteryGild.JP...