For floor area, don’t assume every extra square metre has the same value as the average. A paired comparison is better: find similar homes in the same micro-location that differ mainly in size, then infer the marginal value of the additional area. With only one completed comparable, I’d present...
Is the home furnished, partly furnished or empty? It would also help to know the lease length you prefer and whether the AED 15,990 is paid monthly. The deposit amount and a list of included charges are important before arranging anything.