But if it had to be in Hyrule, I'd say Twilight Princess' Lake Hylia. It'd be a relaxing getaway to a beautiful lake, with added excursions such as the Flight-by-Fowl.
Probably Kokiri forest/lost woods or Lake hylia in oot. I would also want to visit the gorons and zoras to learn about them. I always wanted to find out what zoras eat.
I'd probably stay in Kakariko village in TP, chillin' in the kakariko village spring maybe stop by death mountain. That reminds me of the dolphin island promo in super mario sunshine..someone should make a video like that..
I would probably rent a adobe house in the Gerudo area of OoT, go cliff diving daily (from the bridge to the Gerudo village) and spend most of the day at Lake Hylia.