I stayed at Luigi's studio two weeks ago and it was fantastic. Luigi is a great host, the studio is well kept and has everything you may need: comfy bed, good shower and a fully equipped kitchen. The location is superb, with lots of shops and restaurants and just 5 minute walk from the subway and the Vatican. Both the studio and the location are very safe. I highly recommend Luigi's studio. I will definitely stay there again next time I am in Rome.