A few years ago, in the best cinema of my native hometown the ladies’ room was closed for repair.

So, without further adoAsa a result, they made temporalyrily made the men’s room into unisex.

“Without further ado” seems a bit strange to use here. People usually use it to transition from an introduction to the main act of a show, speech, performance, etc.

They wrapped the urinals with black plastic (to not confuse someone accidentally) and attached a figure meaning “for ladies” near athe one meaning “for gentlemen”.

I guess, they decidedthought, ”Why should it matter who is in the next cabinstall?”

When I came in (I could hardly could wait any more) a few ladies already occupied the room.

My intrusion was faced with eyes of disapproval and contaemption..

That (to uniteCombining the rooms) s certainly wasn’t a good idea.

A few years ago, in the best cinema of my native town, the ladies’ room was closed for repair.

So, without further ado, they made temporarily made the men’s room into unisex.

"into" would be more natural with a noun following it, rather than an adjective, though the adjective works just fine without it.

They wrapped the urinals with black plastic (to not confuse someanyone accidentally) and attached a figure meaning “for ladies” near athe one meaning “for gentlemen”.

"a one" is redundant and should just be "one", though in this case, "the" fits better, since it's expected for there to already be a some sort of indicator for what gender the room was for (same as why "the" has been added before "urinals").

I guess, they decided, ”Why should it matter who is in the next cabin?”

The commas aren't necessarily wrong, but feel unnecessary here.

When I came in (I hardly could wait more)any longer), a few ladies occupied the room.

My intrusion was faced with eyes of disapproval and contamption.

That (to uniteing the rooms) scertainly wasn’t a good idea.

"(to unite the rooms)" isn't necessarily wrong, but doesn't sound very casual/typical.