What makes a good pub and a good time?

What makes a good pub? Everyone will have a different answer for this question. In my opinion there are a few criteria that have to be met in a pub to give a good experience:
1: Good, tasty drinks. If a pub or a bar serves you a pint that tastes stale or has that old flat after taste then it is clear that they are not taking care of their lines or looking after the beer in the correct way. This is the number one thing that puts me off as the point of going to a pub is to drink, if the drink isn't right then the pub isn't right.
2: Atmosphere. When you enter a pub, if the barman is asleep, if there is strange drum and bass music pumping out of the stereo or if the place is falling down on the only customer in the place then it's fair enough to suspect that it's not the going to be the best place in the market. The place doesn't have to have lots of modern features, just evidence that a little care has gone into making the drinkers comfortable.
3: Choice. I want to go into a bar and have a few different things to choose from to make sure the session stays interesting. I want to have something a bit stronger, something with a bit of a different flavour, something you can shot, something you can savour and something which can take the session up a level if needed. If I go into a pub and they only sell one beer, their own special brew and a cheap and nasty wine then I don't think I'm going to have a great time.
4: Company. Could be regarded as part of the atmosphere but I think company is one if the most important things when it comes to having a good time. Obviously you want your friends around you when you go for a drink but if everyone else in the bar is 17 years old, or if every other customer has a long white beard and a ropey old dog then it might not be the best place to go. Similarly if the pub is always full of loud blokes shouting, swearing and spilling drinks all over the place then it can ruin the time for everyone.

These are a few of the things that I think are important for a pub or bar to be a good place to go for a drink. I will refer back to these when talking about some of the pubs that I visit. This is not an extensive list and if you think there is anything else that is critically important for a bar to be a great place then comment!