My experience was really quick as I paid just for one night and I stayed just for less than 6 hours in the flat.
Location is okay (located in a residencial neighbourhood - around 25 min walking from the Central Market)
Before I fly to Valencia I asked if it was okay to cancel the request because there was NO WIFI. And answer was "no". Vero and her husband were nice but I felt they accepted my book request even they weren't really happy to have me.
I guess a better conversation to know more about any small details of the flat is a good solution. Just book if you have no doubt that's the accommodation for you.