Hi Steve,
If you enter www.stuttgart.de you will get to the main page for Stuttgart - follow 'Kultur und Tourismus' to the Ubernachtung page and you'll get a list.
Alternatively you could stay outside Stutttgart for example in Vaihingen (Enz) which also has a nice wine museum. (www.vaihingen.de)
or even Pforzheim itself, which is quite pretty at the Northern end of the Black Forest (www.pforzheim.de) - there are some very pretty towns/places in this area
Wherever you stay the price will include a very nice breakfast to set you up for the day.
If you do get to Seyfried, make sure you ask to go into the shop 'next door' to look at the goldmine of new/older collectable stuff.
And just have a look on any shops website to check their Offnungszeiten - you don't want to turn up and find them closed!!!
Phil