Studio or large room for nice tidy couple

Hi, me (full-time web developer) and my girlfriend (student nurse working part-time in a care home) are looking for a nice place for a couple: either a studio that's self sufficient (with a useable kitchen including oven, hobs, fridge and ideally a washing machine for clothes) or a spacious double room (en-suite desirable). I'm working from home so there must be adequate space for a large desk and good Internet.

We are kind, friendly and polite. We are quiet, keep the place clean, don't smoke and don't have pets so unlikely to cause any nuisance.