If I had to find a negative, I'd say that a couple of times, the voices in the courtyard sometimes seemed like someone was about to enter our room but this, of course, was not the case and something we quickly got used to.
After arriving in Hydra, we managed to get totally lost on the walk up to the Alkionides Pension (All my fault, I was reading the map) but we asked a local and he so-very-kindly went out of his way to take us to this gem. This charming beginning summed up the experience.
It's two minute walk from the harbour, just down a little side street. You enter into a courtyard and you realise what an intimate experience it is going to be staying here - there are only a few rooms and they are all off this courtyard.
We were early and were not sure where the owner was but then we realised, she lives in the rooms up on the balcony.
We called in and she showed us to our room.
It was a good size, totally clean, a nice double bed, a small but efficient shower, working A/C and fine wi-fi. When you're in a place as beautiful as Hydra, you really could not ask for any more.
The courtyard serves as a place where you can sit in the sun in the morning or evening and, being so central, you can easily pop back anytime if you're in and around the main drag of the harbour at all.
I would stay here again and I recommend you do too.