Going with seniors and we just want to say we've been there and catch a view or two - not really hike much due to mobility issues. Where's the best place to go? The touristy part is just fine.

Staying at Doubletree Beijing and could travel by train or hire a car or some combination of the two (some of us are not not comfortable with a bus). We could do an early trip and stop by something in the afternoon (Summer Palace?) if it fits but that is not a requirement (and we'd need the chance to bail if health issues dictate that).

Thanks.