The entire center of the city is within walking distance, so this is a bit of a hard question. Personally I would suggest leaving the hotel. The Nine Streets shopping district has some great options.

One standout to me was Bussia, an Italian restaurant with an exceptional tasting menu and reasonable prices.
http://www.bussia.nl/

Also a great little pub with a fantastic bar menu was De Reiger http://dereigeramsterdam.nl/