Hi Windthenk ~
I can give you at least a little bit of info. My first year, I stayed in a room that accommodated 3 people [me, Paula, and Megan] at Pension Anna. It's not far at all from the harbour and price was very reasonable... even moreso, by adding one person and then splitting it 3 ways. Anna doesn't really speak English, but she's very pleasant, nonetheless. I gave her a pair of kitchen tea towels [brought with me from Florida] as a small, hostess gift whilst there, and she presented me with a fresh flower as a thank you.
Each morning, Anna would bring us coffee and some pastry/bread and juice. I believe this option was $5 euros more per morning. It wasn't a lot to eat, but it was enough. I understand that there was more of a 'spread' at some other B&Bs, but then the cost to stay at those was more, too. So, "you pays your money and you takes your choice" [a saying we have here].
The rooms [I believe there are 4 total... the others accommodate 2 people each and I'm not sure if they're large enough to add a 3rd person] are all on the second floor, so there are 'outside' steps [within a private courtyard that's part of the dwelling] to get to them. There is a covered balcony area with three, round tables, for eating at, so you can be in the fresh, morning air for your coffee and 'breakfast .' It's a pleasant and economical way to start your day.
Margaret and John stayed in one of the other rooms and they may be able to clarify how many it will accommodate. Likewise, Andrea and Marco stayed in a third and they may be able to clarify, too. Another, very pleasant couple [unknown to us] was there for a wedding on Hydra and they were in the 4th.
The only drawback to our room that I can honestly speak to is that the shower had no curtain. It's a corner shower, in a partial circle, and could accommodate and partial-circle rod and curtain, but there wasn't any. So, every shower taken included mopping the small floor or leaving dangerous accummulations of water for yourself or someone else. A mop and bucket were already provided within the bathroom

. Not that doing this is a problem, but when you're trying to rush to get out to your destination, it's a step you can wish could be avoided, but
fairly can't. I think our room may have been the only one with this arrangement, though.
We had two windows in our room that were large and shuttered and allowed us to look to the beautiful hillsides and rooftops

[one directly below ~ see other threads for relevance on this

]. The crows called to us each morning, but with the avian flu scare, I remember this element as being an absence.
I hope this helps you somewhat. You will find Hydra
very pleasant in
any case.
I hope you decide to attend. I hope I do, too... it's my plan, but car issues, et al, continue to compromise my funds... PLUS the HUGE factor for me is having to request my time off ahead of time and having ZERO clue as to my priority in ANY given year, which would be to go see Leonard and Anjani perform. So, this would need to be dovetailed with Hydra, if a tour occurs this year. The problem is scheduling a flight, as soon as I have the money, but not being able to change it, if new information with conflicting dates later emerges... and reserving space on Hydra, with the same dilemma. So

~ what to do, what to do!?!
~ Lizzy