We've been using Scaleway's compute, RDS and S3 offerings for Ente[1]'s cloud offering for over 5 years now.
RDS backups and retrivals from cold storage[2] are both a lot slower than AWS. The "high-availablity" instances for RDS are in the same DC, so the feature is cosmetic. Ignoring these, our experience has been pretty good. Quality of support is great.
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While linking to [2] I realised that Scaleway's own website is behind Cloudflare, which is disappointing given they have their own DDoS protection[3].
[1]: https://github.com/ente-io/ente