I would say the price you pay is essentially for the location... Paola is great in communication, she sent directions and pictures although as a first time traveler to Venice it’s quite normal to get lost... the apartment is so close to Rialto bridge and basically 10-15 ride from the station. It’s surrounded by cafes and restaurants...
But I have to admit, the apartment is super tiny and the bed is barely accommodating an average height. Bathroom and shower is pretty tricky, there is not much of supply in the kitchen (as an electric kettle will be more useful than an old broken cassette player)... if you are traveling with heavy and large suitcase, you might wanna reconsider this place as there are nearly 20 steps to get to the room...
Overall I would say pictures are pretty accurate and the location is SUPER CONVENIENT AND AWESOME.