Dear Smith,
I am David, your new neighbor. Recently, moved in your neighborhood. Paramount important to discuss with you the matter which was created from my side.
I have been notify that due to the noise generation in my flat it has trouble you past a week. As a matter of facts, the flat was under reconstruction and there was drainage system issue and there title of ground were being installed due to that noise were over created so apparently, this was the reason and it take time to complete the task.
I really apologize in this situation but I request that you just endure for one week. Principally, I will try that the workers will start the work during your working hours like morning at 8: 00 and complete it till noon 1: 00.
Hopefully, you can understand my position realized my station. If any other issue please contact with me.
Kindly Regards,
Yours Sincerely, 
Dear Smith,
I am David, your new neighbor. Recently,  
moved
 in your neighborhood. Paramount  
important
 to discuss with you the matter which  
was created
 from my side.
I have been  
notify
 that due to the noise generation in my flat it has trouble you past a week. As a matter of facts, the flat was under reconstruction and there was drainage system issue and there title of ground were  
being installed
 due to that noise were over created  
so
  apparently
, this was the  
reason and
 it  
take
 time to complete the task.
I  
really
 apologize in this situation  
but
 I request that you  
just
 endure for one week.  
Principally
, I will try that the workers will  
start
 the work during your working hours like morning at 8: 00 and complete it till noon 1: 00. 
Hopefully
, you can understand my position realized my station.  
If
 any other issue  
please
 contact with me.
Kindly Regards,
Yours  
Sincerely
,