I've rented a bike here more than 10 times. The bikes are well built, a whole garage to choose from, rent for the whole day for 5000 rubles. If necessary, a helmet is issued. Have a passport with you.
In the warmer months, bike rides for a distance of 50-80 km are organized on weekends. Participation is free, you need to pay for the bike itself, without a passport. I went 4 times. It's a delight! I saw Armenia from a new perspective, met nice people. I attached a photo from one such hike.
I recommend it to everyone!