Ágios Spyrídon sits on the Pierian Riviera, between Mount Olympus and the Thermaic Gulf, with a working village economy rather than a resort markup. Most travelers pair it with a rental car, which spreads cost across the trip and unlocks cheaper family-run tavernas and pension-style rooms in surrounding villages. The trade-off is that without a car you depend on taxis, which compresses the daily budget quickly.
The village's natural anchors are free or near-free: the seaside, the Olympus foothills, and village walks. Paid costs concentrate in three places — accommodation in July/August, weekend seafood tavernas, and the road in from Thessaloniki (about 100 km). Targeting the shoulder months and staying in apartments or small guesthouses rather than coastal hotels is the single biggest budget move.