Here is our solution to having the twizy without a garage or dedicated off street parking. I realised our front garden/patio was easily big enough to park it. So I had some gates/railings made and levelled off the patio to the pavement. Fortunately the curb is very low on our street. I can run an extension lead out of the front door to charge. We park it here when we are away.
However we mostly leave it on the street with a cover for convenience and because we mostly charge it at public charging points. These have the added advantage of free parking for most places we need to go. This is just a £20 halfords cover as recommended on this site. We have stitched in a clear window to display the parking permit and tax disc. Touch wood it has deterred vandals so far.