Pub with accommodation, easily reachable by train from London

[Kake]

Can anyone recommend a good pub for a weekend break, with accommodation, interesting real ale, and decent (needn't be fancy) food? It needs to be easily reachable by train from London (closer to London is probably better — we won't be able to get the train tickets a long way in advance and don't want to pay silly money).

Edit: Ah, apparently we are more organised than I thought — we're going to Winchester and staying at the Wykeham Arms! So my question now becomes, if you had a weekend in Winchester, which pubs would you not miss? I don't want to do an exhaustive crawl, so maybe your top two or three?