It's an okay size, you can definitely do worse. One thing you might have to look at is being able to fit in an 11"/28cm wheel which is necessary for a lot of syrians, most will grow out of an 8"/20cm one. The zoozone 1 is 32.5cm according to petplanet.com so it might be tight.
And you will need to mesh the top, 2.5cm bar spacing might not be enough for a syrian to squeeze out and escape but it's big enough that they'll try and get stuck!
I've done it but a wheel is tough to fit in. You'll also find it difficult to fit in all the toys, especially if you choose to go with a 12" Flying Saucer wheel The Zoozone 2 is much better.