Here's a few things you want to look out for: Unfortunately many people learn what they are via purchasing a bad bike stand. There are a few features that set a good bike stand apart from a bad bike stand. Key features to look out for when buying a bike stand The major flaw is that you'll have to remove and remount the bike to get to the other side - which isn't always ideal, but for basic jobs, adjustments and cleaning, it'll have you sorted. You can mount it at any height you like, and the clamp arm can be positioned on the top or seat tube, with a quick-release mechanism.
If space is at a real premium, then it's worth considering a wall-mounted bike stand like this one from Trivio.