The list price of £489,950 requires consideration within the context of comparable properties and the limited information available. While it is close to other similar properties in the building, the lack of information on the specific square footage of similar properties makes accurate comparison difficult. A score is assigned based on the proximity to nearby property prices and taking into account the ‘average’ price found on nearby streets.

The property appears to be in generally good condition based on the provided photos. The kitchen and bathroom seem recently renovated or well-maintained. However, some areas, particularly the living room, appear slightly dated and could benefit from some modern updates. Thus, a score reflecting this moderate level of upkeep is given.

Belsize Park is a highly desirable area of London, known for its affluent atmosphere, green spaces, and excellent transport links. The proximity to Hampstead Heath, good schools, and relatively easy access to central London contribute to its high desirability and therefore score. The specific location within Belsize Park would need further assessment, but based on the provided data, the location appears strong.

The property has no private garden, instead it benefits from access to communal gardens. While this is a positive feature in terms of outdoor space, it is not the same as exclusive private land. Therefore, a low score reflects this lack of significant private land associated with the property.