Yes I’ve stayed in London a couple of times and absolutely love the vibe there, I’m a fan, but for me that’s what it would stay, one of the places I go to escapeIts the most charming and friendly place. The weather ain't so good (you'll need a pullover and an umbrella often in summer) but Europe is just a few miles away and easily reached.
Note that London is in character a different country to the rest of the UK.