I'll just jump in briefly:
The following questions:
1. On the upper floor, we are getting a 130cm Villeroy & Boch Subway washbasin. The Villeroy & Boch base cabinet should cost around 825 EUR at Reuter.
Would the Godmorgon cabinet from Elch also fit? I really can't see any reason why not. However, it costs less than half and would definitely suffice for our needs!
2. On the ground floor, we are getting a Villeroy & Boch Loop&Friends countertop washbasin. An 85 cm worktop from Villeroy & Boch Shape is supposed to cost about 450 EUR (also at Reuter).
Does anyone have a tip for a cheaper alternative?