I decided against the Sheraton (where I have stayed before) precisely because I remembered that there were two bridges over.
Mom easily gets lost, but luckily she has no problems asking for directions - and she speaks (not great) English and a little bit of German even.
This excitement is all going to happen September 10th - if anyone goes by those areas before then and spots any obstacles (construction, signs obstructed, Momento being replaced by McDonalds

) please let me know!