Good question Anon - I think it really depends on where you are in your life. If you're a new graduate, as you suggest, putting 4/5 days a week on expenses can help, you might get access to interesting projects, and work with good people. If you are just into a new relationship weekly travel could be a bit of a road crash. Equally if you have no ties you can structure the time to get more out of it - especially if you can get the gym paid for, want to study, explore a new place (after office hours!). Generally I find hotels a bad idea - they feel too much like dead time, negotiate a serviced apartment, with a colleague, (some home cooking), a hire car, gym etc and working from home on Fridays and you might be on to something.