GUS is a very nice apartment hotel. Great suites, comfortable beds, excellent service and communication. It would have been nice with a better entertainment offer (e.g. a wider selection of channels, Netflix, pay-per-view) since the suite had a big screen TV and a smaller TV in the bedroom. The only "negative" is the location (if you want to be in the historical center, that is) but that's reflected in the price. On the other hand, the location makes it super easy to head to the beach (as the trains for Lido di Ostia is just a short walk from the apartment hotel).