there are no hours as it is a walking tour which you can do on your own

Goh niet meteen. Je wandelt langs enkele historische hoogtepunten.

You can go on the self guided tour of the freedom trail. There’s an app. Stop at the sites that are most meaningful to you.

We did not use a tour company. Maps are everywhere and it's all just a nice walk. There are a couple of places that charge for admittance but you don't have to go in if you don't want to pay.

Street parking , free for 2 hours

No problem

It depends what you want to do on your way. If you just stroll along you’re fine. But if you want to visit highlights on the way 3pm is rather late. F.e the cemetery and the Constitution are open till 5pm.

There are public restrooms at Fanueil Hall (about 1/2 way) and Revere house (if you pay to get in site). Also plenty of coffee shops and chain restaurants available if you don't feel comfortable walking into a bar or sit nicer down restaurant just to use bathroom.

It really depends on the weather because the entire Freedom Trail is outdoors. There are stops along the Freedom Trail where you can choose to go into a museum or something, but you will literally be walking through downtown Boston. I think the coldest months are January and February, so you might luck out in December!

We stayed in Cambridge and walked into the city everyday. It was very hot when we were there so started early. Everything is walkable in Boston.