They sometimes need training to use the ramp but once they’ve got it, they’re OK. But once they get old they can struggle with it – the ramps on two tier hutches tend to be too steep for an older pig to get up and they end up stuck on whatever floor you put them in on. Some are also just straight up too dim to use it – when one of our first pigs died, the one it lived with who was the dunce of the two forgot how to use the ramp because he wasn’t being shown how to use it by the other.
We have an Omlet Zippi single height run with a shelter in one corner for the outdoor run (the UK isn’t a good place for guinea pigs to live outside full time – it shortens their lifespan as the extremes of the temperature range don’t suit them) and a roof cover designed to fit it. It’s been much better than any wooden hutch we’ve had – it’s bigger, but it’s also predator proof – they can’t dig into it or flip it over. The best thing about it is that it’s much more long lasting than wooden hutches – wooden hutches tend to degrade as you move them around and in the weather, and we found we were replacing them every couple of years particularly if there’d been a bad or wet winter. This will last forever. Also, because it’s made of thin green mesh it blends in with the garden and isn’t such a carbuncle as a rotting wooden hutch.
https://www.omlet.co.uk/shop/guinea_pig_products/zippi_guinea_pig_run_and_playpen_accessories/25502/zippi_guinea_pig_run_with_roof_and_underfloor_mesh_-_single_height/
They’re not the cheapest, but we’ve saved it in the cost of buying replacement hutches easily and they’re often available on Facebook Marketplace (I see there’s one in Rotherham, which I don’t think is that far from you?). We got ours off Ebay for £50.
The lads love it.