Please don't make him any offers! Stay strong.
If you haven't and still can, print off the evidence of the 5* hotel stay. It disputes his skint comments.
Get a new phone number. If you are registered with any agencies give them the new number. Once you have heard back from any external jobs you have applied for with that number ditch it.
Are you still paying his telephone or car bill? If not and he is just hanging around trying to get pity money out of you for them please don't give him any. He is in a 5* hotel with OW FFS you would be paying for that if you gave him money!!! If the bills are in your name or coming from your account get them sorted asap so you are not paying them!!!
Make a note of when he moved out and work out what his share of all bills, gas electric, council tax EVERYTHING that you were paying for and that he never paid a penny towards. Especially one where he left before the quarters bills were in etc.
Make a note of all the jobs you set up and arranged all the paperwork for and are entitled to a share of.
If he wants to talk to you about his 'share' of money on the phone again before he can say anything get in first and say something like 'cool that is really good I have spoken with my solicitor about what my share of your business, van, car, work I did for you until you left is.' Once your solicitor has contacted me I will get mine to correspond with them and you and I have no further need to speak. Don't tell him any more than that or agree to anything.
You will get through this. Look how far you have come in a few shorts weeks. /hugs