The ukulele had to be returned. Bad factory quality control - proud frets to the point they hurt while playing, wood deformations under lacquer, small imperfections and bad craftsmanship all around the instrument. An instrument in this state should not have left the QC.
Thomann offered some refund for me too keep it, but it was not enough to be viable. Just solving the fretwork would cost me an hour or two of luthier work which would already be more than the mentioned refund, not to mention I would be left with cosmetically inferior product. As far as sound goes, the ukulele sounds good, but did not have a really amazing sustain, it is kind of a dull instrument. I suppose this can change a bit when "opening up" by playing so this review can't provide information on that long term. It is however, definitely not the loudest instrument and doesn't have the amount of sustain as it would be expected from acacia wood.