"What should a good restaurant be like?"

The purpose of this is to assess the our school canteem in Ulaanbaatar.Our freinds always visits canteen.Sometimes we can't visit our university canteen.Because our canteen have many customers  and we need to find table.Because our canteen sitting very few.I think not use enough area.  There is varied  menu at canteen's which  includes a delicious pirojki,tsuivan and  a choise of foods bar.My delicios food is  tsuivan bar  while tsuivan with cabbage salad,niislel salad and soup.Niislel salad  include potato,carrot,sausage,cucumber and bean.Sometimes food was rather cold . My freind think chef warming food. 
The price is as same as  markets price.I think the service is normal,because service is rather slow.But cashiar is helpful , friendly and polite.Our canteen clean table ,comfortable sitting and normal market prices.
 Sometimes cashier make mistake.For example:She gave me wrong my change.I think our mongolian's restaurant   not enough attribute.Because staff not working kind ,don't  listen to customer request  and  rude.Some korea and chines restaurant is very dirty and bad atmospher.Our government attraction  this problem.
Our canteen manager should  make a few improvement.
Firstly ,she should  make sure that  all hot dishes are hot when they go out to customers.
Secondly ,she should  make new idea and attract students.
Thirdl,she make sure new foods.I think food choice was few .For example:Healty foods,bakery and many kind of drink.
Fourth,she must dont make mistake and make sure new idea.
Finally,she should improve staff training,the staff make few mistake.
I beleive manager receive my report.