Мы запарили банный веник, даром что заход в парную был коротким.

Here запарили means something like steamed / soaked in hot water / prepared by steaming.

With a банный веник, this means putting the bath whisk in hot water or steam so that the branches and leaves become soft and ready to use.

The verb is perfective because it presents the action as completed:
Мы запарили банный веник = We steamed/prepared the bath whisk (and finished doing so).

If you used the imperfective, for example запаривали or парили in some context, it would sound more like an ongoing, repeated, or background action.

Not really, at least not in the usual English sense.

A банный веник is a bundle of leafy branches, traditionally birch, oak, etc., used in a Russian banya. People steam it first, then use it in the steam room for massage-like tapping or fanning.

So although веник often gets translated as broom, in this context it is better understood as bath whisk or sauna whisk.

Банный means related to the bathhouse / banya.

So:

• веник = broom / whisk
• банный веник = bath whisk used in a banya

Даром что is a concessive expression. It means:

• even though
• although
• despite the fact that

So the sentence structure is:

Мы запарили банный веник, даром что заход в парную был коротким.
= We steamed the bath whisk, even though the visit into the steam room was short.

This expression can sound a bit more literary, idiomatic, or stylistically marked than plain хотя.

Compare:

• хотя заход в парную был коротким = although the steam-room session was short
• даром что заход в парную был коротким = even though the steam-room session was short

The meaning is close, but даром что has a more expressive flavor.

It is definitely understandable and still used, but it is less neutral than хотя.

A learner should recognize it, but in everyday speech the safest and most common choice is usually хотя.

So:

• хотя = neutral, very common
• даром что = idiomatic, expressive, sometimes a bit literary or conversational in a marked way

If you are speaking and want the simplest option, use хотя.

Literally, заход means an entry / a going in / a round / a visit, depending on context.

In banya or sauna language, заход в парную means one round or session in the steam room — one time going in.

So here:

• заход = one visit/round
• в парную = into the steam room

Together: a trip into the steam room, a round in the steam room, or a steam-room session.

It does not just mean the physical act of stepping through the door; it refers to the whole short stay inside.

Because в парную expresses motion into the room, so it takes the accusative case.

• в парную = into the steam room
• в парной = in the steam room

This is the normal Russian contrast:

• в + accusative = motion/direction
• в + prepositional = location

Examples:

• Мы пошли в парную. = We went into the steam room.
• Мы были в парной. = We were in the steam room.

In your sentence, заход в парную means a going into the steam room, so accusative is required.

Парная is short for парная комната, literally steam room.

It comes from the adjective парный / парная / парное, related here to steam (пар).

Russian often turns adjectives into nouns when the missing noun is obvious from context. So:

• парная (комната) = steam room
• столовая (комната) = dining room
• ванная (комната) = bathroom

So в парную literally means into the steam room.

This is about the predicate adjective after быть in the past tense.

In Russian, after verbs like быть, the descriptive word is often put in the instrumental case:

• заход был коротким = the session was short
• он был уставшим = he was tired
• она была счастливой = she was happy

So коротким is the instrumental singular masculine/neuter form of короткий.

You may sometimes see nominative in some contexts, but the instrumental is very standard here and often sounds more natural in this kind of sentence.

Because it agrees with заход, and заход is a masculine noun.

So:

• заход = masculine
• therefore короткий must also be masculine
• in instrumental singular masculine, короткий becomes коротким

That gives:

заход был коротким

Yes. A very close alternative would be:

Мы запарили банный веник, хотя заход в парную был коротким.

This is more neutral and probably more common in ordinary modern speech.

The difference is mostly stylistic:

• хотя = plain although
• даром что = more idiomatic, expressive even though

So the original sentence may have been chosen to sound a bit more colorful.

Yes, Russian could drop it:

Запарили банный веник, даром что заход в парную был коротким.

Russian often omits subject pronouns when the verb ending already makes the subject clear.
Here запарили shows we from context, especially in narrative speech.

But including мы is also normal. It can add a little emphasis or simply make the sentence clearer.

So:

• Мы запарили... = explicit we
• Запарили... = we understood from context

The word order is fairly natural, but it does help shape the flow.

First comes the main action:

Мы запарили банный веник

Then comes the concessive comment:

даром что заход в парную был коротким

This order feels like:

1. Here is what we did.
2. Here is the slightly surprising fact that did not stop us.

That matches the meaning of даром что very well.

Russian word order is flexible, but the original order is probably the most natural for this idea.

Because заход is a very natural word in sauna/banya culture for one round in the steam room.

If you said время в парной, that would just mean time in the steam room in a more general way.

But заход specifically suggests a discrete session: you go in, stay a while, then come out.

So заход в парную был коротким means not just that there was little total time, but that this particular round was short.

No. It refers specifically to one trip into the steam room, not necessarily the entire visit to the bathhouse.

A banya session can involve several заходы в парную — several rounds in the steam room.

So заход в парную был коротким means that particular round was short. It does not automatically say anything about the total time spent at the bathhouse.