In a city like Venice it is important to evaluate the prestige of the area, its centrality and its distance from public transport.
The beauty of the view from the property can considerably affect the price. The type of view is also fundamental.
Other than the state of restoration of the property, it is also important to consider the quality of the finishing touches.
A good internal distribution of a property should be rationally organized and easy to modify based on the desires of the next owner.
The height of the interior walls can help improve the prestige of a property.
One also needs to consider the state of the communal areas of the building.
A terrace, altana or garden in Venice are rarities and as such are of particular value.