kono heya ha eki ni tikai si, hiatari mo ii. yatin ga takai wake da.

With 近い, the thing you are close to is often marked by に.

• 駅に近い = close to the station
• 海に近い = close to the sea

So に here marks the reference point. This is a very common pattern with 近い and 遠い.

A learner might expect の somewhere, but 駅の近く is a different structure:

• 駅に近い部屋 = a room that is close to the station
• 駅の近くの部屋 = a room in the area near the station

Both can be similar in meaning, but the grammar is different.

近い is the plain dictionary form of the -i adjective. Here it is being used as the predicate of the clause:

• この部屋は駅に近い。

That is why you use 近い, not 近く.

近く is the adverbial form, used when modifying a verb or connecting in certain ways:

• 駅に近く住んでいる = live close to the station
• 駅に近くて便利だ = it is close to the station and convenient

So in your sentence, 近い is correct because the clause ends there before し.

し is used to list reasons or favorable/unfavorable points. In this sentence, it gives one reason and suggests there are multiple factors:

• 駅に近いし、日当たりもいい。 = It’s close to the station, and it also gets good sunlight.

The nuance is often:

• giving supporting reasons
• building up to a conclusion
• sounding a little softer or more conversational than a direct から

In this sentence, those reasons lead naturally to:

• 家賃が高いわけだ。

So し helps create the feeling of Well, it’s close to the station, and the sunlight is good, so that explains it.

That pattern is very common, but し does not always have to appear more than once.

Here, the structure is:

• reason 1: 駅に近いし
• reason 2: 日当たりもいい
• conclusion: 家賃が高いわけだ

Because the third part is a conclusion, not another item in the list, repeating し is unnecessary.

You could also hear something like:

• 駅に近いし、日当たりもいいし、家賃が高いわけだ。

But that sounds heavier and less natural here. The original sentence is smoother.

も means also / too.

The speaker has already mentioned one good point:

• 駅に近い = it is close to the station

Then も adds another:

• 日当たりもいい = the sunlight is good too

So the sense is:

• It’s close to the station, and on top of that, it also gets good sunlight.

If it were 日当たりがいい, that would simply state the fact. Using も makes the second point feel like an additional reason.

日当たり refers to how much sunlight a place gets, especially in real-estate or housing contexts.

So:

• 日当たりがいい = gets good sunlight / has good sun exposure
• 日当たりが悪い = does not get much sunlight

It does not just mean sunlight in a general sense. It specifically refers to the condition of a room, house, or spot in terms of sun exposure.

This is a very common word in apartment and house descriptions.

They are the same word. いい is the normal everyday reading and writing in many contexts, while 良い is the kanji form.

A useful thing to know is that this adjective is a little irregular in conjugation. Even though the plain form is usually いい, other forms often use よ:

• いい = good
• よくない = not good
• よかった = was good
• よくて = being good / and good

So 日当たりもいい is perfectly normal.

わけだ means something like:

• that explains why
• no wonder
• so that’s why
• it makes sense that...

It shows that the speaker is reaching a natural conclusion from what was just said.

So:

• 駅に近いし、日当たりもいい。家賃が高いわけだ。

means:

• It’s close to the station, and it gets good sunlight. No wonder the rent is high.

This is not just a plain statement that the rent is high. It is an explanatory conclusion based on the earlier information.

Often, yes, わけ can mean reason or circumstance, but in grammar patterns it is often better to learn the whole expression rather than translating わけ by itself every time.

In わけだ, the overall meaning is not simply is a reason. It is more like:

• given the facts, this conclusion makes sense

So in this sentence, 家賃が高いわけだ is not just the rent is the reason. It means:

• given that it is near the station and sunny, it makes sense that the rent is high

That is why わけだ is often taught as an explanatory pattern.

が is natural here because the speaker is identifying what follows from the previous information: the rent is high.

• 家賃が高いわけだ = that explains why the rent is high

If you used は, it would sound more contrastive or topical, as if comparing the rent with something else:

• 家賃は高いわけだ = as for the rent, that explains why it is high

That is not impossible, but が is more neutral and straightforward here.

The ending だ is the plain-form copula attached to わけ.

• わけだ = plain style
• わけです = polite style

So this sentence is in casual/plain style overall. A more polite version would be:

• この部屋は駅に近いし、日当たりもいい。家賃が高いわけです。

The meaning stays basically the same, but わけです sounds more polite or explanatory in formal speech.

It is doing both, but the main feeling is giving reasons and then drawing a conclusion.

Structure:

• この部屋は = as for this room
• 駅に近いし = it is close to the station, and...
• 日当たりもいい = it also gets good sunlight
• 家賃が高いわけだ = so that explains why the rent is high

So the speaker is not just describing the room randomly. The first two clauses support the final conclusion.

Yes, you could say:

• この部屋は駅に近くて、日当たりもいい。

That would be grammatical and natural.

But the nuance changes a little:

• て often simply connects descriptions
• し more clearly presents them as reasons or supporting points

Since the sentence ends with 家賃が高いわけだ, し fits especially well because the speaker is building toward an explanation.

So both are possible, but し better matches the idea of Here are the reasons, so this conclusion makes sense.

は marks この部屋 as the topic:

• この部屋は = as for this room

Everything that follows is information about that room:

• it is close to the station
• it gets good sunlight
• therefore the rent is high

Using は sets the frame for the sentence. This is very common in Japanese. Instead of repeating this room again and again, Japanese introduces it once as the topic and then gives information about it.