[alanl]

I worked in London in the mid 00's with someone who did this.

  - He worked 2 Days at London Office, 3 days WFH in Spain.
  - He would book his flights about 3 weeks in advance and stay in a cheap hotel for 1 night.
  - As a contractor/sole trader, he could offset some of the costs against his taxes.

If I remember correctly, his reasoning was that the combination of costs, better weather, and being close to friends/family made it worthwhile.