Which parts of the wall are best to visit to get the most of our trip

If you are a regular sightseerer, Badaling is recommended, as it is the best-preserved among all existing parts.
If you are a hiking lover, Jinshanling, Simatai or Jiankou are recommended for they have more ups and downs. But be careful when hiking there.
There ar no accommodations along the wall. But there are some small hotels operated by local farmers at the foot of the wall. In the case, you need to go down to stay overnight.