The apartment had everything we needed for our short stay and is exactly like it is advertised. It is very modern - the bathroom in particular is impressive. Air conditioning was fantastic. One of the hosts (Marina) welcomed us when we arrived at about 10.30 pm and communicated with us throughout our stay, including booking us taxis.
Its location really suited us. In the Old Town on a quieter side street. Yes there can be a bit of noise from people outside (drunk!) but it didn't stop us from sleeping. 2 minutes from Charles Bridge. This meant we could visit it and cross to Lesser Town quite early in the morning when there are less people around.
And Prague itself. We think it is stunning and are so pleased we came (we recommend the zoo too!).