How many nights in Matera?

Of course it depends on your interests, but I liked it enough to visit twice, so I’d say 2!
Toretta ai Sassi is lovely.

I always recommend at least two nights in Matera and staying at the B & B La Corte dei Pastori. We had our own cave and a terrace looking over the sassi. The views of the sassi are at their best in the early mornings and evenings. We stayed for two nights (several years ago in November) and wished we had two more nights. There are wonderful non-fancy restaurants and the upper town (the new town) is also interesting.

Thanks very much for the useful replies.

I was there for three nights in September, I did not feel like that was too long.

2 nights should do it.

We spent three nights, two nights would have seemed too short.

We've been to Matera multiple times and always spent three nights.