Posted: Thu Sep 23, 2021 2:28pm
No use to the original poster, but useful to anyone else googling this for answers.
In Ronda you can go to Medicos de Ronda, 5-8 mins walk from the very centre of Ronda.
(I think this is the address Av. Andalucía, 16, 29400 Ronda)
It cost €30 for an antigen test - results in 30 mins. PCR tests are available, and take longer (I believe at least 12hrs, could be longer). Pick up results in person after 30mins, and collect Certificate for travel.
I walked in with no appointment and within 20 minutes had my test done - I think this was the same for everyone else there.
If looking well in advance there are many services which you order before leaving UK and bring the self test with you and upload results using smart phone(e.g. take a pic of result alongside you passport) and they supply a doctor verified certificate within an hour or so. This would have been more convenient for me as I wouldn't have had to visit the clinic.