L’inquilina del terzo piano dice che nel vicinato tutti si aiutano durante i traslochi.

Because Italian usually drops the final vowel of certain articles before a word that starts with a vowel.

• la + inquilina becomes l’inquilina
• This is called elision

So L’inquilina means the female tenant.

Inquilina is the feminine form, and inquilino is the masculine form.

• l’inquilina = the female tenant
• l’inquilino = the male tenant

So this sentence is specifically talking about a woman who lives in the building.

Del is a contraction of di + il.

• di = of
• il = the
• del = of the

So del terzo piano literally means of the third floor.

In natural English, though, we would usually say on the third floor. Italian often uses this structure after a noun:

• l’inquilina del terzo piano = the tenant on the third floor / the third-floor tenant

Dice means says, and che means that.

• dice che... = says that...

Italian uses che very often to introduce a clause after verbs like say, think, know, and hope.

So:

• dice che nel vicinato tutti si aiutano... = she says that in the neighborhood everyone helps each other...

In English, that is sometimes optional, but in Italian che is normally kept.

Nel is a contraction of in + il.

• in = in
• il = the
• nel = in the

Vicinato means neighborhood, local area, or vicinity.

So nel vicinato means in the neighborhood.

It gives a slightly local, community-based feeling: the people living nearby.

Here tutti means everyone / all people, so it is plural.

• tutti = all, everyone, everybody
• tutto usually means everything or all of it

Examples:

• Tutti parlano. = Everyone is speaking.
• Tutto va bene. = Everything is fine.

In this sentence, tutti refers to people in the neighborhood, so the plural form is needed.

In Italian, the masculine plural is the default form for a mixed group or an unspecified group.

So tutti can mean:

• all the men
• a mixed group of men and women
• people in general

If the group were known to be all female, you could say tutte.

Here tutti just means everyone in a general sense.

Here si aiutano means help each other.

The verb is aiutare = to help.
With si, it becomes a reciprocal expression:

• si aiutano = they help one another / they help each other

So:

• tutti si aiutano = everyone helps each other

In more natural English, we would usually say:

• people help each other
• everyone helps one another

It uses the same pronoun as reflexive verbs, but here the meaning is reciprocal, not truly reflexive.

Compare:

• Si lava = he/she washes himself/herself → reflexive
• Si aiutano = they help each other → reciprocal

So in this sentence, si does not mean they help themselves. It means the people in the neighborhood help one another.

Because in Italian tutti is grammatically plural.

Even though English often uses singular-looking words like everyone or everybody, Italian often expresses the same idea with a plural form:

• Tutti si aiutano literally = all help each other

So the verb must also be plural:

• tutti aiutano
• tutti si aiutano

This is perfectly normal in Italian.

It means during moves or when people are moving house.

• durante = during
• i traslochi = the moves / moving occasions

The noun trasloco refers to the act or event of moving from one home to another, and traslochi is the plural.

So the sentence is talking about a general habit in the neighborhood: whenever someone is moving, people help.

Because the sentence is describing a general repeated situation, not one specific move.

• durante il trasloco = during the move → one particular move
• durante i traslochi = during moves / whenever there are moves

The plural makes it sound like a recurring pattern in that neighborhood.

Italian often uses the article where English might not.

So Italian says:

• durante i traslochi

where English may simply say:

• during moves
• when people move

Leaving out the article here would sound unnatural in standard Italian.

Not exactly in that form.

First, in quartiere is not correct here. You would need an article:

• nel quartiere = in the neighborhood / in the district

But vicinato and quartiere are not always identical:

• vicinato emphasizes nearby residents, the local community, immediate surroundings
• quartiere means a district or neighborhood as an area of town

So nel vicinato fits especially well because the sentence is about neighbors helping each other.

The structure is:

• L’inquilina del terzo piano = subject
• dice = verb
• che nel vicinato tutti si aiutano durante i traslochi = subordinate clause

Inside that clause:

• nel vicinato = place
• tutti = subject
• si aiutano = verb
• durante i traslochi = time/circumstance

Italian word order is fairly flexible, but this version sounds natural and neutral.