some addition:
Tried this search thing on
www.hotel.de where you can enter address and it will show the hotels next to it. The closest ones were:
Flemings Hotel Frankfurt-Neue Börse (4*), 100 meters (never heard of this hotel)
Ibis Hotel Frankfurt West (2*) 630 meters
Hotel Aurelia (2*) 1.320 meters
there are 10 others within 2 km from Palace which by most standards should be a walking distance.
Chivaz
few minutes later: Was curious about this hotel 100 meters from Palace and entered the address of it as well as the address of Palace on Map24.com. Damn, it seems to be almost the same place although different address. The hotel address is Elbinger Straße 1-3. Anyone know about this hotel?
Chivaz (again)
...and then 3 minutes later: looked a bit more into it, and it is quite close although not the same place. Direction from Palace:
You start at Königsberger Straße in Frankfurt am Main and head towards Elbinger Straße for 5 yd.
Leave Königsberger Straße and turn left into Elbinger Straße. Stay on for 136 yd. and you have arrived at your destination
So I guess you can be pretty worn out and still make it back to the hotel ;-)