Had the pleasure of a 5 night stay recently. Everything was even better than we expected it to be. The main window in our particular room (Capri) was on the small side but we were not there to sit around looking out of the window, so no big issue. As a place to stay it has everything going for it, even a fridge in the kitchen to chill your bubbly!
Wifi was available, the aircon was great, the bed one of the most comfortable and street noise levels low.
Salvatore and everyone else we met were just great and contributed to the quality of our stay. In fact Pompeii is probably the friendliest place we've stayed in Italy and we've done a few.