Guido was a great host. He gave us his mobile number so that we could contact him if there was any issues and he arranged to letus into the apartment early at short notice.
The apartment was clean and had everything we needed. It is a 10 minutes walk from the beach and the railways station. The centre of Rome is just over an hour away using public transport.
Next time we are in Ostia we will be seeing if the apartment is available again.