"There is a library on the west side."

Translation: 西边有图书馆。

[yu90wyhw]

Would sound better to say 在西边有一家图书馆。

[KX3.]

It is usually 一座图书馆, and using this is acceptable as well.

[Mokuhazush]

Would it really? I thought you couldn't mix 在 and 有 in sentences like this. Wouldn't it be 在西边是一个图书馆？

[Nivkotzer]

Why is there no zai here?

[KX3.]

I think it works better without it. In fact, I believe the sentence is grammatically wrong （句子有语病） with it.

[eugenetehyj]

There's a missing 个...

[BobBowles1]

家 is the measure word for 图书馆.

[KX3.]

个 is acceptable, 座 is more specific and some say more accurate while I have rarely (if ever) heard 家 used.

[kuyaC]

Is that the traditional character for 坐?

[KX3.]

No, it is a different word with the same pronunciation. As a noun, it means "seat" e.g. 在座的人 (those present); as a measure word it is used for "immovable objects" e.g. 一座山 (mountain), 一座桥 (bridge).

I did a brief search and apparently it is a word that originates from 坐 or the 后起字 of 坐.

[IanMcFarla17]

If the 在 is better omitted here, then they should change the 'Tips' section, which in its current form SPECIFICALLY tells us not to omit the 在 when using these directional phrases.