There's a variety of delightful little restaurants here.
Canal boat trips between here and Camden Lock also stop at London Zoo. On this trip be sure to watch out for Maida Vale Tunnel where the entrance is literally blanketed with old spider webs (or, if you're arachnophobic, grab a drink and look away).
British Waterways think the postcode for Little Venice is W2 1TH; neither Multimap nor Transport for London agree. W2 6NE, the postcode for Warwick Crescent, one of the streets running along the bank of the canal at Little Venice, seems like a better choice.