I forgot to ask your budget - but i've put together some components and suggestions for a very capable machine for word and browsing etc...
I chose intel as it uses less power - but AMD would be cheaper - but you mentioned the words 'small foorprint'. Keeping that in mind an SSD would obviously use less power too.
It's not the cheapest build you could do but it should be reliable and it's made up of quality components and should fit the 'work without hassle' criteria.
Hopefully, you'll get some others tag on and add their 'two penneth' - but costs are, ~£450 if you choose the SSD (250Gb), or, ~£400 if you choose a conventional drive (i think - it's late and i'm adding up in my sleep).
Additional: I chose a case that doesn't support an optical drive - if this is needed you will need a slightly different case,
Prodigy M MATX Cube - it won't look as clean but needs must etc... Or You could opt for an external drive if it's to be used very rarely.
If this is too expensive then it can be adapted (Slightly cheaper PSU, cheaper/smaller SSD, cheaper case and even the AMD route).