「家賃が安いところ」は英語では「an area with cheap housing」か「an area with cheap rent」になります。
例文：
Rio: Do you know any areas in Tokyo with cheap housing?
りお：東京の中に家賃が安い所ってわかりますか？
Miyo: I'm not sure, it is hard to find cheap housing within the city. Rent is cheaper if you look outside the yamanote line.
みよ：よくわからないよね。都内でしたら安い家賃を見つけるのは難しいですね。山手線の外に探せば家賃は中より安いよ。
住宅街＝residential area
住宅ローン＝mortgage loan
It's an amazing bargain for that size of flat...what a low price rental...
It is very hard to find low price rentals these days, in any major city...
The demand as outstripped supply...Its now so rare to find a bargain!
"It’s an amazing bargain for that size of flat...what a low price rental..."
大都市で安い家賃の物件を探すのは難しいですよね。
需要が供給を超えているようです。
お得な物件を探すのはより難しくなっています。
"It’s an amazing bargain for that size of flat...what a low price rental..."
（その家賃でそのサイズの部屋を借りれるなんてお得だね。）
If you are wanitng to say that the apartment has a low rental price then you can say 'Low rent' or 'Low rental cost' You can also use the word 'cheap' this means it is not expensive
So the simply way is 'Cheap apartment' or 'Low cost apartment'
The two sentences you see provided above are terrific ways to express to your listener that the rent for a particular apartment is very cheap. In the first sentence you will see the term dirt cheap. This means something is very cheap. This term is appropriate for informal settings. It would make a great addition to your vocabulary.
Where in Tokyo can I find a cheap apartment to rent.
>Where in Tokyo can I find a cheap apartment to rent.
*This is asking in which area in Tokyo you can find apartments for rental that is cheap, not to expensive.
..........***.........
Where in Tokyo can I find a cheap apartment to rent.
都内で家賃が安い場所を聞くときに使える表現です。
Apartment (US) = flat (UK)
A snip = a surprisingly cheap item; a bargain.
"The wine is a snip at £3.65"
"Hey Madison, where are you staying these days?"
"Well when I first arrived here, I was staying in bed and breakfasts or getting places on Airbnb, but then I found an amazing flat overlooking the park!"
"It sounds expensive."
"Not at all. It was a real snip. I think someone was murdered there!"
"Oh!"
I am looking for a cheap apartment to rent in X.- This means you are looking for a place that is cheap to rent in a specific area.
It is important that you mention the area you are interested in.
I am looking for a cheap apartment to rent in X.
これは、特定のエリアで安い物件を探しています、と言う意味になります。
興味のあるエリアを言及することが大事です。
アメリカ合衆国 
イギリス 
南アフリカ 
