I did the WFH for a year, and while the freedom is enjoyable it is very easy to slip into working very late going into 'hermit mode'. You have to be very diligent in training yourself to be productive during normal hours so you can be social in the evening.

My new situation is categorized as flexible office hours. I go into the office 2-3 days a week, enjoy good rapport with the people I work with, then WFH on Mondays and Fridays (typically). I find this to be a good balance - I have enough structure Tuesday to Thursday that I can continue this trend Monday and Friday.