added note about self-hosting VPS providers

Author: hyperknot

docs/self_hosting.md

@@ -18,6 +18,14 @@ I there is a 99.9% chance you only need **http-host**. Tile-gen is slow, needs a
 
 **Ubuntu 22** or newer
 
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+
+### Provider recommendation
+
+One amazing deal, which is tested and known to work well for http-host is the €4.5 [Contabo Storage VPS](https://contabo.com/en/storage-vps/)!
+
+
+
 ---
 
 ### Warning