I booked Mirsini for an initial two nights through Airbnb and ended up extending my stay from two nights to seven.
Petros is easy to communicate with and very helpful when needed and otherwise offer complete privacy. The hotel is easy to find and close by the main bus station. On arrival he offered a welcome bottle of wine and water.
The hotel is old and simple, sure, but I dare to say it offers one of the best views in town and I spent a lot of time on the balcony. Didn't use the a/c - as I liked having the balcony door open and waking up seeing the sun rise as I opened my eyes.
Used the pebbled beach by the Dive Center a short walk towards town mainly (it was largely children-free), but best beach in town, Almyros, is a fair walk away.
Lots of nice taverns close by and in between supermarkets.
Only complaint is the noise, but hardly the hotel's fault. You're right on the main road into town and the Greek taverns play Greek music. I called it ambience and tried to enjoy it. Tea and coffee making facilities would have been nice.
Would definitely book again. Mirsini met all my needs.