We stayed at the end of October 2013 (21/10 - 27/10) and that is a splendid time to go Sicily because the sun is very gentle, water in the sea is warm and trully cristall!
About the apartment it is located extremely perfectly - just near the seaside where you can park a car (not that difficult to find a place to park), near to Duomo. And via Roma is one of the main streets of Ortigia - the historical center of Siracyza. A lot of restaurants near.
As conserns Mariella and her husband Milko - very friendly, helping us with very everything! Always giving exact advices about restaurants and places to see. Also if you come to restaurants that they advice and tell there that you are a guest of Mariella - you get a discount!
The bed in the apartment is really huge and very soft))
The food on Sicily is also splendid - sea food, cheeses, all of them - you can buy on the MArket - Milko will tell you where and when to go - so you get perfect tomatos, fruites, cheese, olive oil and other nescessary stuff to prepare Italian luch with salads at the Kitchen in your apartment, which is very enough to cook something. Having dinner on the terrace is also pleasureful!

So if you stay at Mariella and Milko you will never regret!