Mario is a great host with a lovely flat in Edinburgh! Even though there had been a miscommunication with the cleaner and when we arrived the place had not been cleaned he was very responsive on WhatsApp and had the cleaner there within 30 minutes of our arrival (and reimbursed our fee). We went out and by the time we came back the place looked great and was all set up for us! Nice location too-- we were able to walk everywhere or take cheap Uber's. Definitely my best tip about Mario though is that even if something goes wrong, you can have no problem trusting him to fix it quickly and appropriately!!