Climbers for north, east and west walls

Any suggestions for climbers to cover three sides of my small garden on north, east and west walls. Each wall is approx. 6m / 20ft wide and approx. 8ft tall.  I thought about honeysuckle but am concerned about mildew. I also like clematis but struggling to find the right ones for my garden. Want to avoid anything that will be too large for the space (montana? climbing hydrangea?).

Any help much appreciated.