I'm looking for ideas for a small-ish Czech town to spend 2-3 nights in this September in between Prague and Budapest. I've considered some of the more obvious stopping points like Bratislava or Brno, but I'm not totally sold on either of those, unless someone wants to talk me into them. I am looking for somewhere without a lot of touristy stuff to do, because I really want to just slow down for a day or two and sleep in, read a book in a park, sit for a couple hours at a café, go for a long walk, that sort of thing. At this point I will have completed the GAS tour and done 4 days in Prague, so I'll definitely be ready for a vacation from my vacation. I plan to spend 4-5 days in Budapest after this before flying home.
So far the best option I've found might be either Trebon or Telc, which both intrigue me. I will be traveling by train/bus as needed and these two towns seem to be reachable between Prague and Budapest, even if it's slightly inconvenient. I thought I could base myself in one of them and then if I happen to get bored I could do a day or half day trip to another one. But I'm open to suggestions if anyone has stayed anywhere else that might fit. I'm leaning toward the Czech Republic, but I would also consider suggestions in Slovakia if there is somewhere I could get to by train. I've seen lots of pretty pictures of places in Slovakia, but it seems a bit harder to get to the really great locations by public transport, or maybe I've gotten the wrong impression.
Thanks in advance for any tips or ideas anyone wants to share.