I'm currently studying in Seremban. So, I know quite a few things there. For hotels, there's plenty of it. You can try Hotel Seri Malaysia, Royal Bintang and Allson Klana. About the price, I'm not sure but the Hotel Seri Malaysia one is sure under RM 250.

There are few of recreation park around Seremban and they are well-maintained. The view is nice and people go there everyday for jog, exercise, etc. For shopping, there are Seremban Parade (bowling, karaoke) and Terminal One (cinema). But both are quite unlikable. For a decent one, just go to Seremban 2, which is about 15 minutes drive from Seremban for Jusco.