We stayed in an apartment in Paris for our honeymoon, December 2010 - Jan 2011.
Unless Housetrip change their policy on bookings, or you get a cast-iron assurance they will not do what they did to us, our advice is to STAY WELL CLEAR OF THIS COMPANY.
We had the worst holiday ever, because having received all our money well in advance, Housetrip did not act on their duty of care to us to inform us that the host we were staying with had withdrawn from them before our stay.
Consequently, once she had the money, our host had no obligation to Housetrip and we had no protection. She quicky moved 6 other people into an apartment that was only just fit for four, and was generally foul towards us.
Housetrip refunded a paltry amount to us, which didn't even cover phone calls trying to sort out the mess.