Guglielmo's place is great: good location especially if you're visiting the Vatican. The flat is very clean and the decor is really cool: fun industrial features. Guglielmo was very good at communicating, making sure check-in was smooth etc. We had a minor plumbing emergency: I ran the washing machine and the sink overflowed, flooding the kitchen. Fortunately he raced over in 5 minutes to stop it and hopefully it's all fixed now!