Rano podnoszę żaluzje i od razu widzę park za oknem.

Rano means in the morning or morning-time. It is an adverb, so it does not need a preposition.

• Rano podnoszę żaluzje = In the morning I raise the blinds
• You do not say w rano

A related expression is rano = early / in the morning, while wieczorem means in the evening, and nocą means at night.

In Polish, subject pronouns are often omitted because the verb ending already shows who is doing the action.

• podnoszę = I raise / I am raising
• widzę = I see / I can see

So ja is unnecessary unless you want emphasis:

• Ja podnoszę żaluzje = I raise the blinds (with extra emphasis on I)

Podnoszę is the 1st person singular present tense form of the imperfective verb podnosić.

So:

• podnosić = to raise, to lift
• podnoszę = I raise / I am raising

Because it is imperfective, it can describe:

• a habitual action: Every morning I raise the blinds
• an action happening in the present: I’m raising the blinds

In this sentence, it most naturally sounds like a habitual morning routine.

Żaluzje usually refers to blinds and is normally used in the plural, much like English blinds.

So:

• żaluzje = blinds
• podnoszę żaluzje = I raise the blinds

Grammatically, this is the accusative plural, but for this noun the accusative plural looks the same as the nominative plural.

Yes, it is natural. It literally means I raise the blinds, which fits how blinds work.

Depending on context, Polish might also use other verbs, for example:

• otwieram żaluzje = I open the blinds
• odsłaniam okno = I uncover the window

But podnoszę żaluzje is perfectly normal if you mean lifting them up.

Od razu means right away, immediately, or straight away.

So:

• i od razu widzę park = and I immediately see the park

It adds the idea that as soon as the blinds go up, the park becomes visible.

Widzę is the 1st person singular present tense form of widzieć.

• widzieć = to see
• widzę = I see

Just like podnoszę, it already contains the meaning I, so no separate pronoun is needed.

The verb widzieć takes the accusative case for its direct object.

So the object is park.

For a masculine inanimate singular noun like park, the accusative form is the same as the nominative:

• nominative: park
• accusative: park

That is why you get:

• widzę park = I see the park

If it were a masculine animate noun, the accusative would often look different.

Because za can take different cases depending on the meaning.

Here it describes location, so it takes the instrumental:

• za oknem = behind the window / outside the window

The noun changes like this:

• okno = nominative
• oknem = instrumental

If there were motion to a position behind something, then za could take the accusative instead.

Literally, yes: za oknem means behind the window. In natural English, though, this is often best understood as outside the window or through the window.

So in this sentence:

• widzę park za oknem = I see the park outside the window

It means the park is visible on the other side of the window, not that it is somehow hidden directly behind the glass.

Yes, Polish word order is fairly flexible.

The sentence:

• Rano podnoszę żaluzje i od razu widzę park za oknem.

is a natural, neutral order.

But you could move parts around for emphasis, for example:

• Podnoszę rano żaluzje... = puts less emphasis on morning
• Od razu widzę park za oknem = emphasizes immediately
• Park za oknem widzę od razu = more marked, more emphasis on the park

So the original version sounds smooth and natural, especially for describing a daily routine.

Most likely it describes a habitual action: something the speaker usually does in the morning.

Polish present tense can express both:

• what happens regularly
• what is happening now

In this sentence, rano and the whole context make it sound like a routine:

• In the morning I raise the blinds and immediately see the park outside the window.

So even though the verbs are in the present tense, the meaning is probably habitual rather than strictly right this second.