I really don't eat a lot of Chinese food, so this list is a bit Western focused:

1) Ole deli
-in spite of the fact that Ole might be the most expensive grocery store on earth, they make a great ham & cheese sandwich for Y19
2) Marriott
-would be #1 were it for its insane prices (figure $80 pp if you want to get full)
3) Grandma's Home (Mixc)
-lunch only unless you fancy waiting for 1.5 hours for a table in the evening
-great value, and solid Hangzhou cuisine
4) The Korean place at Mixc
-I rarely spend more than y200 there (two people), and their beef is pretty good
5) Happy Link
-it gets panned on TA because it seems like nobody can find it (they have a phone!), but their Indian food is quite decent