Assume you have all the luxuries of a modern life in your Tardis (toilet, hot showers, TV, books, game console, …) which doubles as a mini self-sufficient apartment with it’s own energy stores and generation.
Where in history would you go if comfort wasn’t an issue?
Ah yeah, spa treatments work wonders. I often wonder what path Hitler would have taken if he had a decent steam room, instead of all those amphetamines he was taking…