http://www.hsm-basel.ch/home.php
How will you be around for? AFAIK, its not possible to rent a piano unless its for a minimum of 12 months. As for purchasing a used piano, check out www.ricardo.ch .
Do bear in mind that it will take some time to sell the piano when you leave. If you are here for 3 months or less, its best to rent practice rooms.
For the used piano, again, keep your eye out in the Gratis section of Unibas (most of the people I know got their pianos for free - good ones too!), or check Ricardo.ch.
10:30 - Thank you very much for the comments. One question : What is unibas.ch ?
"Sofern Ihnen die Mietsache nicht ausdrücklich und ohne Einschränkungen zum Musizieren vermietet wurde, müssen Sie im üblichen Umfange auf die Mitmieterschaft Rücksicht nehmen. Im Allgemeinen geht man davon aus, dass in jeder Mietwohnung ausserhalb der Ruhezeiten 2 - 3 Stunden pro Tag musiziert werden darf. Dieses Recht kann durch einen Mietvertrag oder eine Hausordnung nicht eingeschränkt werden. Eine Ausnahme gilt für sehr laute Instrumente wie Schlagzeug oder Trompete. "
Here is a thread that you might find useful:
Music instruments and flats - do they mix?
Of course that rule is simply for when you have neighbours who are fussy and tell you to stop - you can then politely point out to them that rule. Music comes from my apartment about 3-4 hours a day (excluding lessons) and I've never had a single complaint (TOUCH WOOD!) despite living above 2 offices.
If your husband is here for 3 years, are you and your son planning to stay long term? I got a little confused there as I got the impression from your posts that you were only visiting for holidays.
So, some options personally I would take, considering the factors you mentioned:
1. If you are here for long term, and your son is planning to take it seriously, either:
a. rent a piano with the silent option.
Musikhug and Jecklin offer pianos with that - good brands too, like Yamaha, Schimmels, Bechsteins (although the Bechstein silent system is totally different from the technology of the Yamahas and Schimmels) etc. It still serves the function of the upright, but it has the silent option where you can play during quiet hours or late in the night. The rest of the time, you can play freely. The silent option must not be substituted for practice times as the effect is like what it is on a digital - the sound and touch completely changes.
I personally wouldnt encourage the clarinova route for your son if you are here for long term - whom you've indicated is a early advanced player if you are here for the long term as it will seriously affect technique (think how the real piano works, and how striking the keys different produces different sounds on just one key which the clarinovas cannot achieve, and you'll see my point).
I did explore that option of a digital piano once and as much as as they are technologically advanced now, they cannot compare to the the real uprights and grands, touch wise. Thats just my opinion anyways.
b. get a second hand from ricardo . Make sure you get a proper technician to take a look. Some pianos on there go for cheap but turn out needing alot of work (hammers worn etc) which costs just as much to get it back up. You dont want to end up with a white elephant.
2. If you are just here for the holidays , a clarinova will do as its just 3 months and your son can go back to banging his proper one when he gets back to the US.
Good luck in your search and welcome to Basel in advance - if your son is keen, lets get in touch. I am always looking for fellow pianists to have a go on 4 hands pieces like this!!
Additionally, he has formed a non-profit org here in Cincinnati, OHIO, called Share The Music, with his piano buddies. They put up piano recitals in various Senior Centers and Old Homes, to entertain Seniors. They have one coming up tomorrow. He was wondering if he could team up with other pianists / piano students and organize a similar piano recital in a church or senior center, while he is in Basel, as a Share The Music event out there. Is this something that might interest you and others in the area ? Perhaps you can PM me, if this interests you.
Obviously, due to unique situation of the laws here, he does need to put in practice times during the day and not get carried away with the silent/clarinova option just because he prefers to work at night - which I am sure his teacher will notice after he gets back from vacation if he has been.
I am not sure about the scene in Basel or Zurich when it comes to bringing music to the old folks though I have to say that it is an excellent idea, and a great opportunity for him to clock performance hours! Most impressed