The Overnight Run from Tbilisi to Zugdidi
Georgian Railway's Tbilisi–Zugdidi sleeper leaves from Tbilisi Central Station on Station Square, a short metro ride from Rustaveli Avenue, and runs through the night via Samtredia on the Poti line. Book a bed rather than a seat: the second-class four-berth compartments are the sensible compromise between price and privacy, and single-berth first class sells out first in July and August. Take the lower bunk if you are offered a choice; the upper ones sit close to the ceiling and the air conditioning vents.
Arrival at Zugdidi is early, often before the bakeries on Rustaveli Street have opened. The station sits west of the centre, a short taxi ride from most hotels. Sleep in Tbilisi the night before rather than cutting it fine from the airport, and keep the morning loose — the marshrutkas to Mestia fill up through the morning but rarely run to a clock you can plan around from a train window.
Zugdidi to Mestia: The Svaneti Connection
Zugdidi is the gateway to Svaneti, not a destination in itself. The Mestia road runs north through Jvari and along the Enguri reservoir, then up the valley past Khaishi — roughly three to four hours in a shared minibus or a private car, less in good weather, considerably more in snow. Marshrutkas leave from beside the station and the central bus point through the morning. The Enguri hydroelectric dam, one of the largest concrete arch dams in the world, is a striking halfway marker.
If you are heading beyond Mestia, the road to Ushguli is rougher and slower, two to three hours in a high-clearance vehicle, and is usually impassable from December to March. My recommendation: take the train, sleep in Zugdidi one night, and travel to Mestia in daylight. The mountain road is the best scenery of the trip, and you will see none of it from a night bus.
Where to Base Yourself at Each End
In Tbilisi, stay in the Old Town around Abanotubani for atmosphere or in Vera and Sololaki for quieter streets within walking distance of the station-side metro. Rates in the city climb sharply in May, June and September; late October and November are cheaper and still mild. In Zugdidi, the Dadiani Palace and its botanical garden anchor the centre, and hotels cluster within a few streets of it — practical for an early departure rather than charming.
In Mestia, the Svan towers are the landmark you want to be near, and guesthouses in Lanchvali and around the town centre offer the best value. Book ahead for July and August, when Svaneti fills with walkers on the Transcaucasian Trail, and for the late-January ski weeks. Heshkili and Ushguli are for people with their own transport or a hired driver; do not assume a taxi will be available at night.
Timing, Weather and What to Skip
The train works year-round and is genuinely useful in winter, when Svaneti is quiet, cold and beautiful but the mountain road is frequently closed or slow. Best months for the combination are June, July, September and early October. August is busiest and hottest in Tbilisi. Check the Zugdidi forecast rather than Tbilisi's before you pack — the Samegrelo lowlands are humid and wetter than the capital.
What I would skip: the day trip to Zugdidi as a standalone outing from Tbilisi, which spends more time in transit than it earns; and attempting Zugdidi to Mestia on the same morning the train arrives if the weather is poor. Also skip the temptation to book a single night in Mestia — the road eats your time, and two or three nights is the minimum that makes the journey worthwhile.