Martin A
Google
This place is quite interesting, but it can be a bit tortuous to get there. You either go by taking two cable cars from Funchal, or use road transport.
If you go by cable car, it is somewhat counter-intuative, as you go up on the Maderia Cable Car to Monte and then you walk 300m or so to the Botanical Garden Cable Car, which takes you half way back down to get to the garden!
It is important to note that you must not pass the ticket office for the botanical garden cable car without an electronic or paper ticket for the ride. There is a steep section down to the cable car entry point and there is no opportunity to buy a ticket there. It's a stiff walk uphill to go back and get one!
The garden itself is spread out over numerous terraces down the hillside from the cable car terminal. There are some steep and uneven pathways. The garden is quite unimpressive at first, but it gets better as you go down. The interactive map is worth downloading via the QR code in the garden. Remember that what goes down must come up, and if you are going back on the cable car, you will have to get back up there! Not to mention the short but steep section back up to the other cable car!
If you only want to go to the botanical gardens and cable cars are not your thing (and twisty roads don't bother you), it would be worth checking out other options to get there (by car, taxi or bus), but if you like cable cars and/or you would also like to spend some time in Monte, then go for it and enjoy the ride!