A beautiful apartment in a walkable location. We stayed for a month as a family of 4. The bedrooms are on opposite side of the flat which could be a pro or con depends on your kids.
The elevator had a mind of its own, so we used the stairs. Not a problem for us, but might be if you depended on the elevator. Note that in Jan 2023 Pilgramgasse the nearest stop on U4 also has no elevator due to construction.
The host was responsive and accommodated us when needed.