We had problems with shower which had almost no pressure and we needed to wait long time to have some hot water at all. It was almost impossible to take a shower (we stayed 4 nights). We informed our host about it on Friday morning and after 7h!!! and a reminder she informed us that a plumber can come only on Monday. We were leaving on Monday so it wasn't a solution for us. What's more, we were not the 1st to inform her about this issue. After some more insisting, she answered that nothing can be done and it's like this in Rome on the top floors!!!
There was no shower gel only an old soap.
Good points: flat has a great location: 15min walking to Vatican, 35min to Colosseum.
We definitively do not recommend this host and her flat(s).