I bloody love going away on my own OP (fortunately...I've been on my own for over 20 years now 😂)
When my DC were young I farmed them out to my parents when I went away, now I can just bugger off whenever I please 😊
I've been to the States twice, Cyprus, France, Italy, skiing in Austria and Andorra, Spain, Bavaria, a couple of cruises, many weekends away here in the UK...can highly recommend The Cotswolds, Stratford or Bath to start you off gently, or Northumberland is equally beautiful (depends of course where you are and what you're looking to get out of it!). You can feel a little lost in London I always think, unless you know what you want to do...it can be somewhat overwhelming for some (I'm not a big city person, like the museums, theatres etc but I don't enjoy the frantic pace...but you might?)
Anyway, my point is I guess...DO IT!!! Think about what it is that you want from your time, pick the location that matches that...then go 🥰 👍