One single node with both address and POI should be fine. Questions like this one often concern area objects, like buildings, with multiple addresses, and then one have to use extra address nodes. But for a single node object with a single address that's not an issue.

One single node with both address and POI should fine. Questions like this one often concern area objects, like buildings, with multiple addresses, and then one have to use extra address nodes. But for a single node object with a single address that's not an issue.