Almaty does not really have a centre. It has a gradient. The city was laid out across the alluvial fan below the Trans-Ili Alatau — the northern wall of the Tien Shan — and nearly every long, straight street either climbs towards the mountains or falls away from them. Directions here are often given as up and down rather than north and south, and for planning purposes the two are the same thing: up is south, towards the rock at the end of the street.
Get the numbers into your head before you open a booking site. Published figures put the settled core of Almaty at roughly 700 to 900 metres, inside municipal limits that run from something nearer 500 metres at the low northern end — the airport apron in the north-east sits at about 680 metres and the ground keeps falling beyond it — up to around 1,700 metres where the streets give out against the foothills in the south. The Shymbulak ski base is about 2,200 metres, so the mountains add roughly another 500 metres above the top of the built-up area, not a clean extra kilometre. Choosing a neighbourhood here is not a question of charm. It decides which way you walk before breakfast, which traffic you sit in, and, in the cold months, what you are breathing.
What the slope actually costs
The gradient is real, but it is a pull rather than a cliff, and it is worth doing the sum that most guides skip. Across the central grid you gain on the order of 30 to 40 metres for every kilometre walked towards the mountains — three or four per cent. From the Green Bazaar up to Abai Avenue is roughly two and a half kilometres and something like a hundred metres of ascent: 35 to 45 minutes on foot, easy without luggage, tiring with it. Ten central blocks is about two kilometres, because the blocks here often run a couple of hundred metres between cross-streets, and that is 60 to 80 metres of climb.
None of which will ruin a day on its own. What it does is set the direction of every journey you make, and the cost compounds over a week. Plan sightseeing so the walking runs downhill and take the car on the way up, not the way back. Book the flat that is above the things you want to see rather than below them, and the same square metres suddenly work harder.
The other thing altitude does is shorten your first day. Arriving from sea level and going straight up to the ski slopes on the afternoon you land is a poor idea; sleep in the city first.