Mishnah 10 addresses the question of whether a husband and wife can compel one another to move from one city to another. The starting point is the division of Eretz Yisrael into three distinct regions for purposes of marriage.
The three regions for purposes of marriage:
Both from the same region: If the husband and wife are both from the same region - he is from Yehudah and she is from Yehudah - neither one can compel the other to move to the Galil, to Ever HaYarden, or in any other direction.
From different regions: A man from the Galil who married a woman from Yehudah, or the reverse, can compel her to move to the place where he lives, because that was the condition upon which they married in the first place.
A town and a large city:
The Mishnah distinguishes between settlements of different sizes: a town is a settlement of ordinary size, while a large city is bigger and has many marketplaces and the like. Apparently, both types have their advantages and their disadvantages.
And the Mishnah says: "Ein motzi'in me'ir le'ir" - a husband cannot compel his wife to move from one town to another, from a town to a large city, or from one large city to another, even though both are the same size, when this involves moving from one land to another, as we mentioned. He cannot compel her to move from Yehudah to Ever HaYarden and so on.
Within the same land, however, he can compel her to move from one town to another town of the same size, or from one large city to another large city, but not from a place of one size to a place of a different size:
Not from a town, which is smaller, to a large city, since there are certain disadvantages to living in a very large city.
And not from the larger city to a place smaller than it, since there too she would face certain disadvantages.
An inferior dwelling place and a pleasant one:
A husband may take his wife out of an inferior dwelling place - a poor or substandard environment, where the place they live is simply not good - to a nicer place. There are various explanations for this: perhaps it depends on the availability of goods, on the types of grain and fruit found in one place and not in another, and on whether prices are expensive or cheap. But he cannot compel her to move from a nicer place to a poorer one.
And on this point it is stated that he cannot even move her from an inferior dwelling place to a better one, because a pleasant dwelling place "bodek". The word 'bodek' is difficult to translate: literally it means that the place tests the person, and the intent is that it is more demanding. As the Gemara says, the onset of intestinal ailments comes from a change in one's fixed habits. Therefore, someone accustomed to a certain type of place may find even the move to the pleasant dwelling place difficult, and so the husband cannot compel her to make even this move.
In summary: In this Mishnah we learned the limits of what spouses can compel of one another in matters of residence: between the three lands one may not move the other at all, unless that was the condition upon which they married; within the same land one may move from town to town and from large city to large city, but not from a place of one size to a place of another size; and as for the quality of the place - from an inferior dwelling place to a pleasant one but not the reverse, and according to another opinion not even from an inferior dwelling place to a pleasant one, because a pleasant dwelling place "bodek".