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So to Clarify:
January - April 2010 we are looking for one (or perhaps a couple, at a push) sublet tenant, living concurrently with me.
(My girlfriend will be away in this period - but occasionally visit. Sublet tenent(s) does not have to provide any girlfriend duties

)
That tenant would recieive own 2 rooms in a six room apartment (c.100 sqm) on one side of apartment.
- I retain two rooms on the other side.
- there are two rooms communal (large kitchen, bathroom) in the centre.
All on entire top floor (converted attic space) of house looking directly onto Oranienstrasse (the quieter end of the street mind).
Really bright in south facing rooms, pretty decent light still in north facing rooms - as long as the sun is out!
For the subletter: one room will be set up as a bedroom & then the other a living-/working-room with sofa, work desk, etc.
The two rooms on offer lead onto one another (ie you have to go through one to get to the other) so we cannot rent them to two seperate people - we can only sublet them as a single 'space'.
Preference for late twenties - mid thirties - reasonably settled/mature person, but without a broom up their ass

- NOT A PARTY GAFF!! Nothing wrong though with having a few beers and a few friends around ...its not a monestry either.
All other tenants in building are Turkish - young families (directly below) or older people. We respect them noisewise...
Non-smokers preferred (only because we have no balcony, I don't care about your lifestyle choices!)
Fully renovated place, good heating (included in rent) (Wifi/telephone and electricity are extra) and pretty nicely furnished.
We will give any applicant honest consideration.
We havent set a rent yet, we've only started to plan around this last week.
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RE: teaching work - (I work in a bilingual school here)
Your girlfriend will probably be not able to work in a state school (even an English-language one), as she does not have a German qualification. However she can teach in a private school ,or do English tutoring (to individiuals or in a Kindergarten (a.k.a Kita)), either employed directly or through one of the many agencies with send tutors once a week into kita to do 'start-up' English
...while her Irish teaching qualification will stand her very well (and put her a hed and shoulders above omst of the chancers who take a go at doing teaching English here, out of desperation), they may want experience or prior training in TEFL, (although many agencies do also offer prior training (which you don't get paid for, and they can decide not to take you at the end if your not suitable, fair enough)
...also it is can be rather late to find work teaching in a kita or school (or with an agency, who hire typically in August for a 1 year freelance contract) , as will be almost a month into the school year, and most places are sorted by now. keep looking though. My advice is look for work from day one (ok, day two) of arrival, don't 'chill' for a few weeks first, you can chill when you know the paychecks are going to come in. In Berlin its very easy to fall into the rythme of doing nothing, as so many seem to be doing that and surviving (probably trustafarians).
Don't mean to be pessimistic, just realistic...it took me about 1 year and a half to get settled and financially solvent (kind of..) here (and I've seen a couple of Paddies in the last 3 years come over all bright eyed then return penniless to the auld sod within a year or less), so trying to give you a bit of the benefit of my experience (and others),
It may be a great city, but it surely isnt utopia or the land of opportuntiy, especially if you don't already have some work lined up, or you speak decent German.
Best of luck to you anyway!!
Thanks a lot for the help. appreciate it. Just to clarify - You don't have anything available until January? or are you saying the 1st place is available?.
Il be working from home but the girlfriend needs to find work. She is a primary school teacher. She has been looking on toytown and stuff all right. cheers for the links.