Very cozy flat, clean, super perfect place, adequate for two persons max, all what you need to serve your self is available.
Windows should have net for flies, noise from time to time from the neighbors, some equipments require maintenance like the kettle, late an hour upon check in while check out is a bit early so please manage your self accordingly.
very quick response by host when call them for any support ( internet was very slow) then they changed router device quickly.
i recommend the flat for any visitors like to stay in trastevere but for three or four days max.