First I have to say that I can totaly recomend a vaccation on Crete in this apartement but only if you are planing on traveling around the island. If you want a quiet vacation on the beach there are better options. That being said: it's an amazing island to discover - with a rental car, a bicicle or by foot.
The Apartement:
It is a nice apartement and a friendly - quick responding host. It is located a bit outside the tourist zone. Expect to walk for 30 min to find a restaurant with a menu written in roman letters (but don't worry it's still easy go order because of the mainly helpful restaurant staff)
You have to get used to walking on foot as the apartment is on a hilly side of the town and for the first 20 min you have only very small side walks.
If you plan on taking the bus try to figure out the routs bevore hand. Sadly that isn't that easy as there isn't a good english bus plan for Iraklio (there is a bus station real close to the flat - you just have to figure out that it is one. from there you can take almost every bus to get to the city, harbour or airbport)
Important to notice is that on Crete you can't flush your toilet paper! It's not a big deal but might catch you by surprise if you arn't prepared to throw it in a garbage can next to the toilet (not only in the appartment but on the hole island)