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First, the upper level does not add floor space. Upper levels cannot be counted towards the floor space because piggies are ground roaming creatures and prefer their living space to be on a single level. Therefore the bottom living needs to meet size requirements
The minimum welfare size for two female piggies is 2ft x 4ft (120x60cm).
However I have found a hutch similar to this online and the measurements are not 2ft x 4ft (120x60cm).
The one I have found is only 100x60cm and therefore does not come even close to minimum welfare size so would be entirely unsuitable for any guinea pigs, certainly not big enough two piggies.
Therefore do get out a tape measure and double check the measurements in cm to ensure it is 120x60cm on the bottom level. If it is 120x60cm or larger then it is fine for two sows