Эта рецензия написана так ясно, что её приятно читать даже на рассвете.

Написана is the short passive participle of написать. In this kind of sentence, Russian uses it the way English uses is written or has been written:

Эта рецензия написана = This review is written / has been written

Russian normally leaves out the present-tense is, so there is no separate word for it. Because написать is perfective, написана suggests a completed action with a present result: the review now exists in a clearly written form.

Because ясно here means clearly, not clear.

• ясная would be an adjective agreeing with рецензия
• ясно works adverbially and describes how the review is written

So:

• рецензия ясная = the review is clear
• рецензия написана ясно = the review is written clearly

In this sentence, the second idea is what Russian wants.

This is a very common Russian pattern meaning so ... that ....

• так ясно = so clearly
• что её приятно читать = that it is pleasant to read it

So the structure is:

так + adverb/adjective ..., что + result

It introduces a result or consequence.

Because in the second clause, the review is no longer the subject — it becomes the object of читать.

• Эта рецензия = subject of the main clause
• её = direct object of читать in the subordinate clause

So literally:

This review is written so clearly that it is pleasant to read it even at dawn.

Russian often uses a pronoun like this instead of repeating the noun.

Also, её is the accusative form here. In normal Russian spelling, you may also see ее, but it is still pronounced её.

This is an impersonal construction.

приятно here means something like it is pleasant or it feels pleasant. There is no normal grammatical subject in that part of the sentence.

So:

её приятно читать = it is pleasant to read it

You can also add a person in the dative:

• Мне приятно её читать = It is pleasant for me to read it

Without a dative, the sentence sounds general: pleasant to read in general.

Because the sentence is talking about the experience/process of reading, not about finishing the whole review.

• читать = to read, focusing on the activity
• прочитать = to read through / finish reading

Here the idea is that the text is so clear that reading it is enjoyable, so читать is the natural choice.

На рассвете means at dawn / at daybreak. Here рассвете is in the prepositional case after на.

This is a normal fixed time expression in Russian, similar to:

• на рассвете = at dawn
• на закате = at sunset

The word даже means even, adding emphasis:

даже на рассвете = even at dawn

The idea is that the review is so clear that reading it is pleasant even at a time when a person may be tired or not fully awake.

Not completely. Russian word order is flexible, but the given order is natural and neutral.

Эта рецензия написана так ясно, что её приятно читать даже на рассвете flows like this:

1. topic: эта рецензия
2. statement about it: написана так ясно
3. result: что её приятно читать даже на рассвете

You could change the order for emphasis, for example:

Так ясно написана эта рецензия, что её приятно читать даже на рассвете.

That sounds more emphatic or literary.

Not exactly.

Рецензия usually means a review in the more formal, critical sense — for example, a review of a book, film, article, or performance. It often sounds more thoughtful or analytical.

Отзыв is broader. It can mean:

• feedback
• opinion
• testimonial
• customer review

So рецензия in this sentence suggests a properly written review, not just a casual comment.

Because что introduces a subordinate clause.

Russian normally separates subordinate clauses with a comma, so in a structure like так ..., что ..., the comma is required:

...так ясно, что...

This is standard Russian punctuation.

The key stresses are:

• реце́нзия
• написа́на
• я́сно
• её
• прия́тно
• чита́ть
• рассве́те

A useful detail: ё is always stressed, even though many texts write it as е. So её is often printed as ее, but the pronunciation is still её.

Also, что is usually pronounced more like што in standard speech.