Stay a night or two in an old-style sailing boat! There may not be a shower on board, but cozyness level is high (possibly TOO cozy for someone over 185cm), and even if it's cold outside, the heater will make you warm. You'll stay in central Gothenburg on the river's North bank (frequent FREE ferry to South). Simple pentry for cooking. Two gyms, one spa and one stadium with showers are close by. 1-2 sleep in the front & 1 on port-side in the salon.