Assuming top is north, I think Vibria would want the southern tower (the one on the bottom left corner). That's probably the warmer of the two.
It does have a sunrise view 
An up-to-date image (I think):
Awesomeness
As a reward, I am granting you a book worth up to 20q.p.
Happy dance!
How about:
The Merchant's Art
Bargain Summa: Level 4, Quality 12
Author: Giovanni Marconi de Venici
I have a feeling I'm going to need to up my Bargain as I start doing more book trades. 
Gifting you is a gift to us all
looks good to me.
Yes! This is the next non-arcane Ability Vocis was going to shop for. 
Hah! Antoine can already gain no benefit from this book!
It seemed a good purchase. And I wanted to go with something non-arcane.
My work program didn't work properly this past hour, so I read this
Uptaded the wiki, too. I love these bits
andorra.wikidot.com/covenant#toc2
Yes.
As a player, I'm all for having rigid rulings in-character like "thou shall stay in Mallorca, save if the Council of Masters allow you to come", since it protects the masters and council, but, in game, finding all kind of justifications in-character to let the player do as they want.
So you could have arachné fight tooth and nail so that the journeymen not be allowed to move back to Andorra as they wish, but, should one petition for it (and it's the player's wishes too), find a reason to agree with it.
Btw, trogdor suggested treating service in Mallorca as in the military. This, IMO, is a great idea, and a great way to model things
I'd say 7 years for the first term.
And I'd add (And Arachné would agree) that, once the initial term is done, each deployment should earn the magus extra vis, as compensation. A magus could "trade" his deployment with any other mage, of course, so long as the post is occupied.
Along these lines, I'd like to define the number of years we're expecting the journeymen to stay in the Balearics in exchange for being given journeyman rank. We've talked around it since the idea was first mentioned, but I don't think we've settled on anything. I'm good with seven years. Of course, I'm also not affected by the decision, because Pere doesn't plan to move to Andorra anyway.
I (and Vocis) can also get behind some version of Trogdor's deployment proposal, though we may want to hold off on formalizing it until it's time for the journeymen to start moving back. At that point the council can design a strategy based on the number of magi that are available to serve there. Vocis wouldn't object to masters being required to join the deployment rotation at that point.
This is all presuming the chapterhouse will still be existent in seven years. Which it may, but this is still a very new thing and we have beet at it less than a year in game. Actually, just over a year by the time all current threads are done. Still,not very long at all.
True, but from a character perspective this just seems like the kind of thing that should be settled in advance. If we decide on seven years and the council (or the troupe, OOC) decides to divest itself of the chapterhouse in four, everyone moves back to Andorra and no harm done.
One point is this- serving at Dragonna counts as services towards becoming a master, from what I understand. So agreeing to serve makes one a journeyman instantly and when you are a master you can move if you wish. That seems like the most obvious approach.
Hmm, I'm not so sure about this. Both you and Trogdor have mentioned that serving at Sa Dragonera counts as a service towards becoming a master, but where did you get this?
Serving at Sa Dragonera waives the 7 season waiting period and counts as your 3 services required for journeyman status. I don't think it should also count as a service towards becoming a master.
And being a master doesn't immediately mean than you can just move wherever you want. Masters have no more authority to "claim" a sanctum as anyone else. Now, if sanctum space is available at Andorra proper and a master is interested in it, they are more likely to be given it than a journeyman. But they would still have to petition the council (of course they would be on the council and be able to vote for themself).
I think it was on the Wikki.
On the other hand, simply having the stationing period be "until they are a master/mistress" which has a seven year minimum period could be an effective additional incentive.
The following is on the wiki:
I believe that's what silveroak and I were referring to.
That was written a long time ago, so others may have forgotten or glanced over it (and/or forgotten it applies to one of their own characters). There is no sortage of space at the main site. At the most, one might have to put forth two seasons effort to build a lab from scratch in an empty room.
However, to be fair, I think we came up with the "instant journeyman" idea some time well after that was originally written.
Aha..I had totally missed that part. Nevermind. 
For the rest, here are some possible ideas…
Choosing to take up residency at the Balearic Isles grants the member immediate provisional Journeyman status. ProvisionalJourneyman status is the same as Journeyman status, with the additional proviso that they must remain in the Balearic Isles for a minimum of 7 seasons (the normal waiting period for Pledges to be considered Journeyman). If they choose to vacate the Balearic Isles, then they immediately lose their Journeyman status. After 7 seasons the provisional title goes away and they are just Journeymen. An additional 3 years residence in the Balearic Isles beyond this would count as one service towards earning Master status. Any time after their provisional status is up they can request a new sanctum from the Master’s Council.
We probably also need to define what “residence” at the Balearic Isles means. If the whole point is for them to keep an eye on Sa Dragonera and the vis source, then having a sanctum there but never actually being there would be pointless. I’d say a requirement of two seasons in the Balearic Isles per year would make sense. This could be doing lab work, studying texts, adventuring on one of the islands, traveling between the islands, etc.
I also think it might be a good time to talk about how much room there is for Sanctums at both Andorra proper and the Balearic Isles. It really shouldn’t be unlimited, and knowing what is available will make future decisions easier. It also could potentially add some political fun to the game as well.
As an example, let’s say there is only one sanctum-sized area left at Andorra proper and Fleur wants it. Pere, as a conniving Jerbiton, knows this and wants something from Fleur. So, having been at the Balearic Isles longer, he requests the sanctum even though he has no interest in it, thus prompting a political battle between Pere and Fleur, possibly ending with Fleur offering a favor, an item, or whatever to Pere so she can have the sanctum. Cool stories like that would never happen if there are unlimited sanctums in Andorra proper.
In fact, as the map looks today, there seems to be only one empty sanctum available, the northeast tower. And if Antoine of Verditius chooses to join as a Pledge, Solomon would be inclined to give him that tower once his 7 seasons are up, probably letting him use it as a guest (not changing anything or refining it) until he is a journeyman.
That was what I figured was likely to happen.
Also, as I understand, the tower next to Fedora's is reserved by agreement for a Gifted Mercere magus and would be available to Lucas when/if he ever relocates.