My Mum and I stayed for 2 nights and found Marina's guesthouse to be very clean, comfortable, and well appointed for a short visit. The bed is extremely comfortable and large and there is lovely linen/towels etc. While the guesthouse is at the back of Marina's house, it is very private and quiet.
Comms with Marina was great and check in was easy.
'Hamburgers' at the front of McCrae had great fish and chips. Pt Leo Estate (25 min drive) was an excellent place for dinner while we were in Mornington Peninsula and we were able to arrange a taxi to, and Uber home. You need a car to explore the Mornington Peninsula, and the walk in to McCrae beach would have been too far to walk for my Mum (about 30 minutes) so having a car at this accommodation was a must for us.
Thanks Marina!