The streets have some asphalt,but lots of cobble stone, the 5 bikers that I have seen all ride fat tire Mt bikes. Not one sign of bike infrastructure anywhere in Lisbon. It’s a beautiful city, I never consider visiting the same place twice, but I would consider here. I’ve got a 4 four hostel room to myself for $23 a night with breakfast. I’m the only “old” person here, they’re all 20 somethings.
I went to the world heritage site of Sintra about a 1/2 hour by train from Lisbon.
Portuguese invent first electric bike. between the cobble stone and hills this is definitely the best way to bike around here.