Everything in Pärnu is measured by distance from the sand: the beachfront costs most and half-empties in winter, the old town stays open year-round, and the pine suburbs are where the value is.
Beachfront — Ranna puiestee and Side
Spa hotels and apartments a minute from the sand, including the big water-park complex at Side 14. The most expensive base in July and August and the one with the strongest claim to the beach; several places cut rates hard, or shut, out of season.
Old town — around Rüütli
The low historic centre, ten minutes' walk from the beach: guesthouses, restaurants and the part of town that keeps working all year. The better choice in shoulder season, when the beachfront is dead but the old town is still open.
Raeküla and Mai — pine woods and cheaper rooms
Residential districts inland and south of the centre, a 20–30 minute walk from the beach or a short bus ride. Family apartments and campsites, noticeably cheaper than the seafront, with pine forest starting at the door.
Practical: the season is the price
Pärnu is a summer town. July and early August are the peak in every sense; from October to April a large share of the beachfront closes, rooms are cheap and the beach belongs to dog-walkers. Book July months ahead, or come in June or the last week of August.