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?
right? walk a mile in the average person's footsteps.
Though I'm now imagining some weird guy bursting into my house in strange garb, just as I'm about to go to work, excitedly pointing at my vacuum cleaner, and the bills on my table, and exclaiming "this is brilliant!"
Haha, I'd ask! If it's a tardis, it should be translating and making me look like I fit in, yeah? At least clothing wise. I'd be a pale weirdo in a lot of places, but it should work! I'll ask if I can visit, and bring them...wine works, right? That's pretty ancient and won't raise questions. That I'd answer with "it's a gift from far awaaaaaaay" very awkwardly.
*Teleports into the middle of the Black Plague. Starts handing out lifesaving antibiotics in plastic pop pill sachets*
"Uhhh, a normal product from the East... yes..."