It is really useful to see Japanese corrected in this way. I think that normally you do not want to discourage us by pointing out our mistakes, but many of us tend to make similar mistakes, and we can all profit from seeing such corrections. 努力を有り難うございました。

すべての　should come before the noun
近所の人たちはすべてのクレイジーです。→　In this case, I think 皆/mina is more natural.

次のアパートに住んでいる。→Use となり/tonari 　in stead of 次. That way, this sentence sounds much better.

近所の人たちはすべてのクレイジーです。
The neighbors are all crazy.

例えば、
For example

ファブリツィオ、次のアパートに住んでいる。
Fabrizio lives in the next apartment.

彼は朝まで歌う。
He sings until morning.

My guess? This apartment is radioactive.