has been opened to us => has been open to us
I love reading..., stay there reading... there are TWO verbs in one simple sentence!
especially in library => in the library / in libraries
environment to read => reading environment
at one time => you mean "once"?
with books are sorted out by subject => with books sorted out by subjects
to the place where supports lend survice => to the check out desk; also there are more than one verbs in your sentence!
Opened on Monday => Open on Monday
Closed at weekend => Closed at weekends
reading in library => in the library